Their market share interests me in one sense, enough to pay attention to it... but ultimately as long as they're still making games i couldn't care less even if i was the only one playing them
Regarding the Virtual Console... tbh i've had enough of buying roms period. Maybe cause i tended to buy games i already have or had already played...

The reality for me is half those ancient games aren't worth the price they're charging regardless of how many systems i could play it on
I do think it sucks which systems are emulated on which new machines though. 3DS should really have SNES and DS games downloadable from the shop. Why they've got GBA games on the Wii U's shop i have no idea!
But i think if i were in their position, i'd also be reluctant to have the cross buy feature as well. I mean, coming from historically where you buy a game for a specific console, it changes the entire business model to have it work on several consoles. As a longtime gamer i actually feel like i'm ripping off Sony when i cross buy on PlayStation, but ultimately i'm not complaining of course
Another World... i had that on SNES! I never saw the Mega Drive version, was it really much different? There's no real need for that kind of (SFX chip) innovation anymore though, the systems are more than powerful enough to handle any concepts they can come up with.