Do all of the employees want to move to Europe suddenly? Unless it’s the UK or Ireland, do they speak the local language? If it is the UK or Ireland, do they prefer the weather in California? Do they have children in school or in college locally? Do they have family they’d rather not move 9 time zones away from? Elderly parents they’re taking care of?
They only have to move their headquarters no? Reincorporate in France. Hire Yann LeCun (I like LeCun)