My thoughts on this subject is similar to those involving unions, if you're not happy with your job, by all means look for another job. Nobody is forcing you to work there. Let the market drive prices and wages.
They do not like the market and they do not like capitalism. What they cannot do is blame what they do not like on markets because then they cannot beat up people. So they obfuscate and redirect by blaming it on business owners even though they know in their heart of hearts that has nothing to do with it. They need people to blame so the workers can be made a victim. If liberals do not have a victim then they do not have the tool they need to push their agenda. Liberals do not know of any other tools except victim-hood.