In 1694 Vauban proposed to the french king "The Capitation Project" a revolutionary project proposing to remove almost all the taxes, to be replaced by a 10% tax concergning all the french French subject (with few examptions) this project nearly failed, some wanted to add this tax to other pre-existing taxes or let wealthy people buy exemptions for this tax, but finally the king trusted Vauban and applied his project almost unchanged. Vauban would latter offers a segmentation in this tax classes according to income, subject to a progressive tax of 5% to 10%.
In your opinion what would have happened if this project would have been unsuccessful followed by example by adding this taxe to others and letting people buy exemptions to this taxes ?