the reason is so obvious that I don’t know why you’re rising the problem again.
THe “UK is spending much more money than France for upgrades” = “the Typhoon is damn late”
BS, Typhoon was never meant to replace the Tornado or the Harrier and they are also getting big upgrades.
Btw, France was part of the EF project at the beginning, but after workshare negotiations failed, France decided to go it alone.
(France wanted 50% of the total workshare, buying only 30% of the aircrafts)