Sony is cutting costs i believe and as long as the ps3 keeps getting closer to affordability i am all up for it. I always keep my consoles when upgrading and even with full backward compatibility, some games never worked on my ps2, or for some reason worked halfway, like for instance by GH copy of Xenogears worked through the first disc. Then on the second disc, nothing, pretty weird.
I think that BC is a nice thing but its not particularly a main thing for me when considering consoles unless I dont have the previous console, like with the wii. One of the things that excited me the most was that when buying the wii i would have the "current gen" nintendo console and also be able to play gamecubes game i missed out, same thing with the 360. However this was before that Wii Fit crap, Miyamoto saying that this past E3 was not for the core gamer and the fact that every xbox 360 seems to have some faulty hardware. Are the new editions getting RoD as well?
Anyway, I think that as technology advances we'll have our BC regardless of hardware, emulation is truly the way to go. With HDD with tetra bytes capacity, in less than we can imagine, we will be able to have a lot of games all in one drive. Hell even a blu ray disc you can technically cram 10+ ps2 games.