I don't think it's necessarily that bad when there's a single large company that dominates a space. from a user's perspective, google search is probably better

I don't think it's necessarily that bad when there's a single large company that dominates a space. from a user's perspective, google search is probably better than any alternative involving four or five competitors on equal footing. some things scale really well. more of a problem is when one company is a big player in several horizontal markets, creating an opportunity to take over new markets with a mediocre offering.