This is a fairly charged way to ask this question, which makes me think your mind is made up on this. I'll give it a go anyway.
The skill and education level necessary for said job spaces have a low bar, which is why the pay is doesn't align with, say, an airplane mechanic. You have a large potential labor force; since anyone can do the job, so the pay is not going to be that great. That is reality. As such, those roles are generally not considered a long-term career move, only transitionary, barring a path to management, or ownership inside of that space. But not everyone can do that, right? Not everyone has the chops to run a business, and/or the inclination.
And while it's true that owners should get paid last as a general rule, especially in the beginning, the owner is the one that takes on all the risk. Dealing with corporate structure and demand in the case of a franchise. That's continuous menu updates (this is why so many menus are on paper now), marketing and advertising. Leases, taxes, accounting, payroll, HR, insurance. Vacation, callouts, scheduling, all manner of FTE facets. Inventory, spoilage, shrinkage. And that's just for something like a retail or hospitality space - it gets far more complex for entities like sports franchises.
Here's what the Brave summarizer says on the wage gap:
Given the above, talk to me about the math that you would be happy with, in terms of paying the owner with the responsibilities listed above, and the average worker in their store. I'm not trolling you, I want to know what you think a more fair breakdown would be.