Frequently, when pressured into this very rare confluence of circumstances, he becomes the third type of thief I mentioned-- the kind that defeats locks because he hates the very existence of locks. It incentivizes him to become better at breaking locks, for the sole goal of breaking locks.
I think for most pirates (who will be mostly content pirates), this consists of going to TPB and grumbling when there is no download, then either just buying it (because they actually really wanted it), or just forgetting about it (because they were only kind of curious). Most pirates just want the software, and software is just not very expensive.
I think at this point, most people realise, at least tentatively, that piracy is bad, and generally don't go around rebelling against the concept of a lock after making a genuine attempt at breaking in. Either that or their rebellion consists of ineffectually complaining about it on Reddit or something, than possibly purchasing it anyway. So I dispute this "frequently" part.
It's completely sensible not to purchase a game with online DRM if you have no internet connection, obviously, as you won't be able to play it. There are heaps of PC games though, physical stores may not stock much due to the huge popularity of online distribution, and the fact that PC gaming has formed it's own unique niche, as not just a "superior console".