The employer is never forced to make bad business decisions. They get to decide what is better for the company: taking that contract, or having all the protesting employees continue to work for them.

Doing it your way can actually cause much worse business decisions. If employees don't give any verbal feedback, only quitting, then the employer might take a hot-button contract and suddenly have multiple important workers quit all at once, losing far more money to replace them than the contract was worth.