I don't know why people aren't more concerned with the fact these giant companies are so large that they're able to take over entire markets extremely easily.

I don't know why people aren't more concerned with the fact these giant companies are so large that they're able to take over entire markets extremely easily. I keep hearing "man, this <insert_product_here> by Google is absolutely awesome!" but it's getting more and more to the point where Google is taking over markets... It's getting concerning when silicon valley companies are getting large enough to be their own governments, with their own micro-countries built into their campuses (Google HQ, Apple HQ, etc. etc.) It's almost like the vatican in terms of size at this point.