One part of this is jurisdiction. I'm being very simplistic here and only have a vague sense of the picture, really (my own prejudice - I find just about everything about meta abhorrent)

They are based in a country that's solely oritentated towards liberty - not fairness or common sense.

There are other parts, of course, like lobbying, tax breaks and so on, but a big part is because they're not based in the EU.