All the companies mentioned are in business where network effects dominate. They absolutely can't stop growing, because there are no second places. The problem

All the companies mentioned are in business where network effects dominate. They absolutely can't stop growing, because there are no second places. The problem here is that the playing field dictates the how the game can be played. This is new marketplace and new dynamic without established rules or balance. Governments slap sanctions to Google, Facebook and Amazon from time to time, but they don't do them consistently or solve the real underlying issues.