Gotta love how the organizations that are last to upgrade their infrastructure- the airlines - squawk most about ATC upgrading its infrastructure.

GPS? Airlines last to install it. ADS-B? Airlines got exemptions and extended the deadline. Reservations? 1950's programming.

But let's privatize the system so it has no accountability to Congress.
Because it's the fault of ATC. Scheduling too many flights into an overcapacity airport has nothing to do with it of course. Let me know when ATC gets in the business of building runways.