The foundations of capitalism are competition and choice.
People often only think about competition in terms of companies competing with each other in terms of profit and market share, but that competition equally applies to wage renumeration, when it comes to getting the most productive workforce.
This is why toxic claims about all companies punitively trying to pay their employees the lowest possible wages is so damaging, as people who genuinely believe such claims won't try to switch job, or ask for a raise, ironically creating a self-fulfilling prophecy.