It's wild ATC isn't funded by use fees instead of being appropriated by congress. Seems like a good opportunity to provide some mechanism so the government has to shit or get off the pot, because if the government won't do the job the airlines would surely be glad to pay for the service themselves.
No, they would be glad to increase fares so that the flying customers pay for the service themselves. Currently, ATC is subsidized by all tax payers. Your method moves the burden to only those that pay for fares. I'm just pointing it out not saying it is good/bad.