US companies or companies with a large stake in the US market will respond to national security letters which means It's easier to get them to cooperate.
So are taxes whats your point? Companies that want to work in the US need to comply with US laws.
Everything in the world is pretty much done through compulsion of one sort or another.
I'm pretty sure that Kaspersky works for the Russian intelligence services (Eugene is an IKCI (FSB Technical Academy) alumni), and you can be sure that Checkpoint and other Israeli companies work with Israeli intelligence, and same goes for pretty much any other security vendor out there, if you are big enough to matter you will be in bed with some one.
