At least Nintendo is still Nintendo.

Sega is just yet another app and game publisher. As a kid from the 80's remembering the Sega vs. Nintendo wars, this is a sad state of affairs.

If you own the platform, you can really push your IPs. I don't think that Halo, which in my opinion was a rather generic shooter when it was first released, could have become this multi-billion dollar franchise without the help of MS.