In regards to the GOG.com thing.. I want to point out that while the stunt was pretty poorly thought out, it didn't really highlight everyone's fears about digital content.
One of the main draws of GOG is that the games are DRM free, so even if the site disappeared for real, everyone would still have their games. If anything, the stunt cemented why DRM-free digital content is important.
edit: regarding the ps3/ps2 compatibility, please remember that there is a fairly sizable difference between playing ps2 games on a ps2 vs playing ps2 games upscaled on a ps3, having 1 less system attached to your tv, less wires in your livingroom, etc.
There are definite advantages to BC and not everyone forgets about their games when something newer comes out. If that were the case, why are so many people excited about the upscaled PS2 remakes that seem to be so popular right now? Why is it valid to be excited about buying Ico/SOTC in HD but not valid to just want to play the originals in near HD.. especially if you've already purchased those games once.
If anything, I think Sony should have kept at least 1 BC SKU available.. it would have been a much better way to justify different price points than a slightly different sized hard drive.