Which reminds me: if the Steambox takes off to the point of even taking over PC, there's risk that the days of PCs as commodity hardware are pretty much over. I mean, phones and tablets took over pretty much almost all of the non-productivity activities these days, leaving games as the only thing that can't be fully migrated. If gamers leave PCs, then that'd mean the only thing left is work stuff, and then PC prices will spike like crazy as they'll be priced expecting them to be bought by businesses. I don't think it'll happen, but it's in a quite dangerous position at the moment.
Also I said my theory was unlikely to happen. In fact, Apple has pretty much managed to prove that both users and developers are willing to give up everything in exchange for convenience. They want the platform holder to take care of everything, even the marketing of the apps! It's pretty obvious technology is going to get even more closed over time. Don't be surprised if we eventually reach the point where even general purpose computing devices end up with the same kind of licensing deals consoles have currently, or even worse.
Haha yeah that is the nightmare scenario. Although I will say that even Steam isn't big enough to kill Desura, GoG, and all the other PC distribution platforms just by leaving the PC. There's also MS Word, Excel, and Powerpoint, which everyone still needs to do on a desktop/laptop. Microsoft wouldn't be dumb enough to force those onto a tablet-only interface.
But even if the worst happens, I built the PC I'm using. If companies start acting stupid about desktops/laptops, we can still just build our own. It'd be more fun that way anyway!