No backwards compatibility in PS3s?

Well, I was quite surprised when I read at Eurogamer that the new 40GB PS3 will replace the 60GB version, and well, the only difference is that the 40GB-version won't have backwards compatibility. So, then there's no need to worry, eh? Well, from my point-of-view, I think there's a great deal to worry about, since I have been thinking of replacing or buying an Xbox 360, but not done so since for example Jet Set Radio Future and the Dancing Stage-games doesn't work on it, but I don't have a PS2, so I guess it's no problem for me actually...
So, back to my studies...