Not everyone can be an entrepreneur because everyone's mentality is different, and also not everyone has easy access to funding that is needed to become an entrepreneur, so there will always be people who can only be employees and that does not mean they are slaves.
The tought that employees are slaves will damage your work ethic, so you cannot become a productive employee, there are also employees who can become successful people, even though their wealth is not the same as an entrepreneur but their assets are enough to live and can also be inherited by their descendants.
what you said is right. it is impossible for everyone to become an entrepreneur, because not everyone is born with the ability and fortune like an entrepreneur, there are some who are indeed more suited as workers and one does not need to feel inferior about it. each of us has our own role, some are indeed workers or entrepreneurs. if there are people who say that workers are like slaves, just let them be, they are mostly just naive people who only know how to discourage people.