It's not a sound interpretation of American economics. The economic depletion caused by the Revolution (
Wikipedia has a reasonably accurate graphic) was largely due to the extreme conditions of the Revolution itself, especially in the South, where many farms were burned to the ground due to constant war, as well as the general difficulties related to trade. But economics were a large reason for the Revolution in the first place, and you're mistaken if you think that British policies at the time were in any way beneficial to ordinary Americans. The British policies were deeply mercantilist, with British merchants making huge profits off of American goods
by law and strict debt codes and deflation enforced
by law. Territorial expansion was also restricted more by British laws, and although American expansionism was obviously terrible for Native Americans, ordinary frontiersmen benefited tremendously from it.
Overall, ordinary white Americans almost certainly benefited from the Revolution in the long run. It's more difficult to access for nonwhites, because that depends on long-term British policy toward them, which is more difficult to gauge since it didn't happen.