Not every union is a political powerhouse capable of doing such. Eventually you'll reach a point where it becomes economically feasible for a company to wholesa

Not every union is a political powerhouse capable of doing such. Eventually you'll reach a point where it becomes economically feasible for a company to wholesale fire it's drivers and roll out it's fleet of driverless cars. It's certainly possible that a union could push for a law against such, but that sounds a bit more like fear-mongering and an anti-union bias than anything else.