"The first three markets named (airlines, telecommunications, health care) are all heavily regulated and the barrier to entries are controlled by the government

"The first three markets named (airlines, telecommunications, health care) are all heavily regulated and the barrier to entries are controlled by the government, not natural market forces." Not true. It costs a lot of money to purchase a commercial aircraft, and not because of regulation. It also costs a lot of money to start up an ISP, and not just because of regulation.