If I do not have the money to buy a lawnmower, or value mown lawns as such that I wouldn't bother mowing my lawns unless one were freely available, then I cause you absolutely no harm by making one from your design. This is the case in the vast majority of material which I may or may not have "pirated"
But you do. First of all, most likely you are not only using my design to build one lawn mower, but spreading it around to friends and strangers so they can make their own. Each one of those strangers is a node in a network of unethical bastages, most of whom *can* afford the lawnmower and simply *prefer* to be free riders.
Second, that you and they are using my lawnmower at all means it is of value to you, so why the Hell are most of you paying $0 for it until a time and place of your choosing? Am I earning interest on this money you acknowledge you owe me (and many of those others who acquired it through you may or may not)? Because you people owe me that too.
On the flip side, if you don't value lawn mowers enough to pay for them: don't use them. Problem easily solved. As noted, the very fact that you are using it means it must have some value, or else you wouldn't waste your time.
What most of the semi-ethical "pirates" seem to do is determine whether the illegally obtained property meets a certain threshold of awesomeness (which can be set high or low). If it meets this (subjective standard), they compare what they think its worth (with all of their psychological biases that tend to depress that price in place) to the asking price, and if the asking price is *LOWER* than the value the asset added to the "pirate's" life, they pay that lower amount. If the asking price is higher than the amount of value they determine, they pay $0 and smugly declare the asset to be a rip-off (and yet they continue to use it freely themselves).
What this does is it forces the maker (the one who adds actual value to the world and makes the world a better place to live) to either spend his time and money defending his exclusivity rights referenced in the Constitution and enshrined in statute, or lower the price to a point where he can capture some more of that semi-ethical crowd's money.
And that leads to another harm to the system. IP rights were established to encourage people to create, and this downward price spiral works counter to that. That makes DRM a more attractive option, which is another harm...but this time it really harms everyone who paid for the damned thing and yet has to suffer the copy protection as if they were the common criminals the copy protection is aimed at.
If In order to buy a lawnmower from you I must also buy three feral bobcats, so instead I make my own lawnmower and reimburse you for what that lawnmower+bobcat package would have cost me sans the price of three bobcats, then the only way in which I have "wronged" you is by taking away your right to charge me for three bobcats I don't want. This is the case with every album I may or may not have "pirated" since online music purchase became available to me.
My property, not yours. If your boss decided that after you worked 8 hours, he was only going to pay you for the three he felt were really "quality" hours, and the rest, frankly, you phoned those in, so you get $0 for those 5. My guess would be that you'd be a bit pissed about that. After all why should he pay for the stuff that wasn't that good? (N.B.: That you thought those hours of work were "good enough" is apparently irrelevant.)
My guess is that any wage earner would not only be pissed, but would seriously consider suing the boss over that behavior, because wage earners aren't "cool" like bosses and "pirates."
Your lawnmower does not have to meet any higher threshold, I pay for every lawnmower I purchase, I just don't allow you to force me to buy bobcats or pay for a lawnmower if - after building it from your design - I find that all it is capable of is catching my lawn on fire and shooting rocks at my feet.
Let's test your theory. The next time you eat out at a restaurant and find that you do not like some portion of the meal, refuse to pay for that portion. Don't eat it, of course, as that would be wrong, just leave it on the plate and tell them that you will subtract the related amount (determined by you, of course) from the total on the bill. Then when the cops come you can feel free to refer them to this thread for your defense of that behavior.
The think you decry is called "product tying" or "bundling" and if you want to be consistent, then you really should download the song you want, and not the others (or immediately delete them without listening to them, save for any publicly available parts you get get from free radio, Amazon, etc.) What I gather from your statement is that you a re building the lawnmower, *keeping* the bobcats and ascribing a value of $0 to them. First of all, it's not clear again why *your* price, set solely by you, if controlling. Second, if you continue listening to the bobcat songs, then they must have some value to you, even if its low, because never listening to them is pretty easy.
Other examples of product tying abound for your to rebel against. As noted, most restaurants serve salads and side dishes with entrées, this is product tying so please only pay for the parts you enjoy. If you buy a software office suite, feel free to only pay for the programs you will use, like say, just the word processor and not the spreadsheet (no doubt the salesperson will accept your humble promise to never run the other programs because of your inherent trustworthiness). Tell your cable company that you are not paying for C-SPAN3 and any other channels you don't watch. I'm certain they will agree that that is completely fair. In fact, feel free to steal cable entirely and then just send them a check when you feel like it based on your perception of your own viewership. After all, it doesn't hurt them for you to take cable without permission, and it certainly does not hurt them if you do not pay for channels you never watch. If you buy electronics that come with a warranty, and you don't want the warranty, demand a price reduction. If you go mini golfing, only play the first 9 holes and then tell the owner that makes it "half price."