I wonder if they could take the average cap ex of say Mercedes, Ferrari and Red Bull over the past 10 years and then work out on a team by team basis how much cap ex allowance over the next X years they’re allowed to spend too reach that. So Williams might get the biggest allowance, followed by Haas and Sauber, but teams like McLaren and Aston might not get anywhere near as much. That would obviously be on top of whatever the base expenditure is now.

I know jack shit about finance though so this is probably way off base!