idk it seems like the healthcare industry as a whole made bank off this whole thing, if they want to help prove it wasn't largely a massive cash grab for the people at the top, then surely they'll reinvest their profits back into salaries to solve understaffing issues?

Many possibilities: firstly by reducing costs from excessive profits, insurance company staffing, "management", etc. Secondly by increasing revenue, e.g. from reducing corporate tax loopholes & increasing corporate tax rates.