No it’s not fair in my opinion. A desert region having hundreds of billions of dollars to themselves is ridiculous. Should be 90 % to the FGS and 10 % to the states.
Why? Texas does not share 90% of its oil with Washing DC, neither does California its movie revenue. The Feds will get their cut, but the money belongs to the people of the region and not a centrally located power. The states need to be respected if this Federal system is to work.