No. Game Freak likes their independence and they have an obviously great relationship with Nintendo. Buying them would be bound to bring bad feelings into the mix somewhere, over something. Best to leave it.
Game Freak wouldn't put it's games on other systems unless it had no other choice financially. Even if you would think that Pokemon would sell well on other systems, it is so synonymous with Nintendo that moving it to a competitor would tarnish that image and actually weaken the brand. It's too risky when things are good.







