The regulations bit is interesting. As much as big corporations like to complain about regulations, they are actually advantageous for established players.
The hurtles with entering the telecom industry is because of the massive hurdles you have to leap at the federal, state, and municipal level ranging from bands, to putting up towers, to ripping up streets, etc.
Or for a more recent example, the online sales tax bit. Amazon was all for that. Why? It erases a potential competitive advantage from a new competitor. That is a move that entrenches the current players in the market.
