Well they can become big and turn into utilities...think electricity, water, gas, post office etc. I think beyond a point govt should just buy a stake in them.

Well they can become big and turn into utilities...think electricity, water, gas, post office etc. I think beyond a point govt should just buy a stake in them. That would keep them from misbehaving too much. Which is what happens in China, India, Brazil etc cause otherwise large poor populations will just be pushed out of markets.