Because companies are really good at optimizing and the outcomes are usually bad behavior that is not-yet legislated. It's a cat and mouse game. Much better to

Because companies are really good at optimizing and the outcomes are usually bad behavior that is not-yet legislated. It's a cat and mouse game. Much better to have a plethora of competition so that the competitive market provides the tight feedback loop. With wireless carriers the MVNO rules mean that I can shop around and jump ship pretty easily. I just switched providers a couple of months ago. Look at PG&E. They're badly behaved but also highly regulated.