I don't know if it would even be possible to make piracy completely impossible without having some hardware lock on the device to make sure it only runs signed

I don't know if it would even be possible to make piracy completely impossible without having some hardware lock on the device to make sure it only runs signed software, I'm going to assume that there is a pirate version of just about every game on Steam available on a torrent site somewhere. I'm also not sure I like the idea of having an always-on internet based DRM built into every bit of software I use. Not being able to play a game because my internet connection is down is one thing, having it completely cripple my ability to get any work done is another thing altogether. In fact that may drive legit users towards piracy, since you would only need to be stung by that once.