When you lose your job to AI, you will understand.
That doesn't answer the question.
In a world where AI has not yet taken all the jobs, when a company provides lousy service, why do its employees deserve to keep their jobs more than the customers deserve good service?
Technology has always displaced workers. And then the society adjusts. Plenty of people will lose their jobs to AI, but most workers will be redeployed elsewhere.
The agricultural revolution displaced farm workers with machines. There was unrest and migration to cities, and eventually that fed the Industrial Revolution and created a working class.
Change is tough, but we will all be fine.