Firings have been extremely limited, and have only really happened to frontline staff who refused to get vaccinated. It’s almost nothing in comparison.
Hospitals could certainly add more physical beds, but they don’t have the people to care for those patients. You can’t fix that overnight.
https://en.wikipedia.org/wiki/Certificate_of_need
>A 2011 study found that CONs "reduce the number of beds at the typical hospital by 12 percent, on average, and the number of hospitals per 100,000 persons by 48 percent.
https://www.ajmc.com/view/ajmc_09oct_hellinger_737to744
>Certificate-of-need laws have reduced the number of hospital beds by about 10% and have reduced healthcare expenditures by almost 2%.
https://www.ncsl.org/research/health/con-certificate-of-need...