Like it or not, some variation of PoS is going to dominate. The general opinion is slowly being aware that the money given over to the electricity and the hardware companies is better off being utilized to develop the coin itself.
No one is forced to give any money to anyone, people exercise their own choices.
Competition requires energy, no-competition doesn't.
So which of the competition is better suited - the one which is spending resources to keep the network running, or the other which is using the same resources in improving itself?