>>Until people with salaries

Salary (income) is a horrible choice to serve as the marker to determine a person's (family's) fair share contribution to the burden of paying the costs to operate a society. Not everyone is so poor that working for a living is a matter of survival.

I can think of only one universal marker that would assure every citizen shares the burden of paying for society's costs equally: wealth.

Adjusted in a manner that the financial impact of one thousand dollars to a full-time MacDonald's counter worker is transformed into a dollar amount that causes the same relative financial impact to everyone, all the way up to the wealthiest family in America.