Because that would require work. They won't work if they don't have to - the heists are purely for fun, not for 'earning' anything.
Edit: Am I older than Warbrain? Let me check...looks like we registered on the same day, but I didn't post on the forums for a day. He has a much higher post count because he spammed a bunch to get to 1000 or some absurd number, if I remember correctly.
Edit 2: Edit deleted for pointlessness.
Edit 3: I actually read the whole thread now, and here is my official response:
1. The fact that some guy said it on the wiki doesn't obligate anyone else.
2. You seem to hold the delusion that we are somehow obligated to go through the motions in order to 'earn' the software. On the contrary, the relatively open nature of the heists and the existence of the Backroom suggest that the heists are purely for fun. The devs are giving their software away as a promotion, there's no reason to think that it will somehow hurt them if we don't bother doing the heists.
3. Age matters not. Let 'em figure it out for themselves, things will move along with or without the rabid speculation.
I, for one, will be doing some of the heists, when I have the time. So far, though, I've cheated because I don't have the time to hang around on the forums.
Maybe I hate everything. Or maybe I just hate you.