People, even if we have enough vents (which we won't) that's just a small piece of the problem. Those patients as quite sick and require a lot of attention. Most patients don't just work happily with the vent, they require troubleshooting often. They require a lot of dedicated attention from nurses. Few nurses do critical care, it's a whole different animal. Current standard is 1 nurse for 2 ICU patients, or even 1:1. It's well documented that understaffing in the ICU leads to worse outcomes, and we won't have enough critical care nurses and respiratory therapists. For physicians we might get away with some creative thinking and use of other specialties under the critical care oversight, but even there it will be a stretch.
Not to mention these patients won't get better that fast, and when they come off the vent they still need rehab and care, they can't just go home immediately.
This is a nightmare in progress.