Some bigger multimedia company might buy them out or inject capital into future projects. No idea how people think a Microsft acquisition is a good idea, specially for Microsoft themselves. Level 5 doesn't only work on game development, they're a whole ass multimedia company at this point. Not only that but the games they develop are aimed at younger teens, children and very casual gamers. A PlayStation console wasn't exactly the best place to release those for in Japan let alone on Xbox. Maybe they could buy them if they wanted to grab some sales in the Spanish market for that sweet Inazuma Eleven dough? /s
I really get the feeling some of you just shout anything at this point when it comes to any potential acquisitions. Sure, I get that you're speculating, but just because it sounds good in your head doesn't mean it's a viable strategic option for Microsoft to buy [insert developer].
Sony won't do shit with them, obviously.