[FooHentai]

(I think) very few people intrinsically want to work for someone else, in pursuit of someone elses goals, for monetary compensation. Most people do that because the monetary compensation allows them to meet their basic needs and pursue their own goals in turn. In this context, 'be free' means chopping out that extra step and removing the need to work for someone else - You have the necessary means and can now pursue whatever goals you personally have independent of needing continual financial input from an employer, for which in return you must dedicate 40+ hours of each week.

For some people, they might start their own business and be their own employer. Others might still go for part-time work in something they enjoy but couldn't support them financially. Others might remain in full-time employment because knowing they can quit at any point removes a large stressor and makes the work itself enjoyable. Others might move to a shack in the woods and spend their time growing food and posting drivel on the internet.

Edit: I've missed out here people who genuinely want to be a small cog in a large machine, working towards a greater collaborative goal e.g. someone working at spacex. That has to be a pretty big motivator for some people in some sectors.