I understand why there is a law in place to make it illegal to strike.
But your logic would suggest to me that what instead would be needed is a law or set of laws preventing the situation from getting so bad that it would come to such a thing.
If it hurts so much for the system to break, then why is it allowed to rot? A strike isn't supposed to hurt "the company", it's supposed to hurt so that people with power are forced to take action to make it stop hurting.
All I'm suggesting is that a class analysis of this situation has a lot more explanatory power than an aesthetic party alignment one. Because if it can never hurt, then it is purely aesthetics.