Using a limited definition of Long COVID that excludes things like the multiples higher risk of stroke, diabetes, autoimmunity, and other bad stuff, the CDC's Household Pulse Survey finds that 7-8% of the country has PASC that significantly impacts their ability to work or live day to day.
A not-insignificant percentage of that 7-8% will never achieve functionality again.
In an environment where 200-300m people are infected each year, the math is tough.