There is no loss of negotiation position when everyone goes on strike, the Machine literally stops. You can also escalate ala French and start burning cars.

Then again, there was this Reagan fire all traffic controllers and put them on a black list thing in the eighties https://www.history.com/this-day-in-history/reagan-fires-113... but I have a suspicion private company with no military personnel to immediately take over would be more willing to work something out.

Wow. Just like in communism. You got to love the land of the free.