Be a consultant/contractor for a company who pimps you out to rich customers on a cost-plus basis. They don’t care if you bill them a million a year or more so

Be a consultant/contractor for a company who pimps you out to rich customers on a cost-plus basis. They don’t care if you bill them a million a year or more so long as the end customer is re-billed (at their agreed mark-up). High skill, niche, high pressure (although you can always quit and run a cafe if it gets too much).