As for access to the legal system? As far as I can tell this is a net negative for them. All I ever hear about around the combination of FAANG+European courts is rather overreaching and abusive attempts to force them to pay lots of money or do lots of things that were never previously required and arguably still aren't under law. I'm sure they would happily lose "access" to the French courts if it meant not paying taxes there - the flow of legislation is so overwhelmingly one way.
a) Don Vito sending goons with guns to hurt and/or kill me if I don't pay protection money and
b) "The lawful government" sending people with guns to arrest me if I don't pay taxes (and potentially kill me if I should refuse arrest).
- The French police rarely kills people, and certainly not for not paying taxes. You can argue some tax dodging is under-prosecuted.
The police ARE the state goons, so the outcome doesn´t change much .