It's certainly achievable. It can even be done with just a single game.
Pokemon MMO
That, alone, would do it. Alternatively, I can think of five third-party titles that Nintendo could conceivably be funding, that would, between them, achieve the same result.
1. Half-Life 3.
2. Beyond Good & Evil 2.
3. Nintendo vs Capcom.
4. Timesplitters 4.
5. Starcraft: Ghost.
Heck, they could even do it with a sufficiently solid lineup of Nintendo and crossover games (and all of them being highly plausible, at least individually).
It's certainly not going to be easy, but it's certainly possible.