What your describing sounds fantastic and is politically expeditious because there is less risk in backing the prevailing methodology, but it is not improvement.
Competition in transmission is good, because alternatives like alternative energy would completely displace these systems and technology advancements would be available and legal - unlike the current insanity.
You know how you can’t put in an oversized solar system and sell power back to the grid, even if you can afford to? Did you notice that the grid is super inefficient because it’s got a limited number of highly centralized generation sources? No? Well that’s the consequence of ownership of the transmission lines. If you own the last mile you own the network. And if you also own the politicians who can protect your last mile interests, why would you invest in change?