I've heard (can't find a source) that Shigeru Miyamoto (creator of most Nintendo's hit titles) personally has a lighthearted stance to the whole emulator/ROM scene and basically thinks it is nice that people still play the games.

Sounds very plausible. It just seems odd that Nintendo would allow this to go on while still making all of these games available for purchase via the Wii store.

I don't think the Wii's target market really crosses much with the people who would really use ROMs on a PC as a substitute for the real thing...

not really... the game play experience on a tv is very different from a few hundred pixel wide square in a browser