Do you think that PSN, XBLA and Wiiware titles could be transferred from your PS3, 360, and Wii to your next gen console.  I've paid 40 bucks so far on these types of titles and I wouldn't want to have to buy these games all over again.  Just a nice idea I suppose..

I better be able to transfer the Wii VC and Wiiware games on to my next Nintendo system otherwise I'll be pissed.

I don't think any of the 3 will drastically change their online store network. It will just carry over to the new systems.

youll most likely be able to do that with the Xbox. they are attached to your gamertag and i dont see them changing that. youll be able to transfer your tag to the new one just like you could from the xbox to 360.

i think its possible that the psn will allow this. and i think its unlikely for the wii.

Seems likely to me for reasons others have said. For Wii, the next system could simply allow you to copy it to an SD card, along with the data saying that you've downloaded it before.