wii U I think is more comparable with wireless HDMI, instead of onlive/gaikai (if I'm not mistaken).
Also I don't think the Vita remote play component would be worth $ 380.000.000, but who am I
Of course not. I didn't initially think they'd buy the whole company either, though I'm definitely not saying it wouldn't be a great idea. If that lag video is real, then it's a good investment. I personally don't think (and/or hope) streaming takes over for core gaming, but there are no doubt a lot of uses for it, no question about that. Not just games: think of video streaming services, where the whole user interface is streamed as well as the videos themselves. Would be a lot easier to maintain than having various clients. Integrating that into TVs, definitely also a good thing - they won't work anyway if they don't have a TV cable plugged in, so additional features that require a connection work easily enough. No upgrade worries for the service, as the whole menu is server-side.