Get those rich people out of the private jets and into the supersonic ones. Then the rich people currently in first class can move into the private jets.
Eventually, that means that there will be some seats in the back of the regular plans for everyday wage slaves.
Its not clear why you would think any of this works this way. Not one thing you said makes sense it's like a weird trickle down economics for flights as if better steaks would get oliver twist more gruel