It's one million percent better in this recent world economy it is not suitable to work for a person it's just like building other people's success. It's good to be the boss of your own business.
Of course, you are absolutely right about, working for one is just like making the person rich and making yourself a slave to poverty and they might disappoint you at anytime.
That is why, one has to make sure they empower themselves , in order to always live a comfort lifestyle and this can be actualize through handwork and empower themselves rather than working for one who you can't show fort your effort.