There is no right or wrong, just different outcomes. Why do you want mining to become centralized?
I don't want it to be centralized to the point where a single mining pool or even single mining farm holds more than 50% of the hash power. Why should I trust these companies to scale the Bitcoin when they can reach consensus without my vote or without anyone's to that matter. They came to be because mining Bitcoin was profitable. You think that makes them competent enough to give control to them?