All good points but isn't it, via the very examples cited above, a stalemate? In my 30+ years experience, when the two parties come to such a point we declare an impasse and seek self-help or bring in arbitration. Also at that point the Union would normally start informational picketing and other less than desirable public displays that voice our displeasure.
Waiting is a double-edged sword. Wait too long and the economy starts to tilt in the other direction giving the company the advantage. Right now is the perfect time to start these public displays while the corporation is humming along on all 8 cylinders.