I agree and we cannot do anything about the hours apart from perhaps trying to find some part-time job, but that is probably not easy either.
So my point was just to not bet full-on on two horses at one. If your priority really is your side-gig or starting your own business, then do not run too fast in the hamster wheel also. Put yourself in a position where it might not be the most fulfilling work, but it serves the purpose of giving you economic room for pursuing your own business.