It isn't quite that simple. There is a whole bunch of game effects happening here that add a lot of complexity to a statement like that.

One key one is price, another is that most miners barely understand how the network works and therefore couldn't exert any force even if they wanted to.

Pools concentrate the force, but miners can move to whatever pool they like the best (usually the most profitable... which is where the main store of wealth is)...

disclosure: large scale eth miner