It would be immediately thrown out unless there are other factors (like if you signed under a different state's law) but it's no different than a company filing

It would be immediately thrown out unless there are other factors (like if you signed under a different state's law) but it's no different than a company filing any frivolous civil suit against you. It costs money for both sides, but that cost usually deters the enforcement too unless you're really about to start a major direct competitor. I don't see WeWork doing that.