Well, it's not that complicated. In a tribe, you help your friends and you hinder your enemies.

Imagine some techie eating lunch with his techie buddies. Is he likely to talk about how he's against net-neutrality, or is it likely that he's for it? If he were against it, he'd seem weird.

Basically, you're not going to screw the people you hang out with all the time, and might want to work with later.