Sometimes it’s a fun mind experiment:
YES, like tax brackets. Everyone should pay 30k$ per year to the government, no matter how rich or poor, for the services they get, and it would be the literal individual fair share.
The percentage-based taxes are already an unfair distribution of cost for the rich, and the progressive taxes amplify it even more. After all, who costs more at school, a Jeff Bezos, or an unruly one?