None of your sources talk about hospitals being "designed" to run at full capacity for profit. Canadian, UK, and most other EU hospitals don't run for profit, so that leaves the US. I doubt you'll find a medical director that claims the way to maximize profit is to design a hospital that is on the edge of meltdown every flu season.
"they would be screaming daily begging for more health care workers"
Ahem:
https://www.webmd.com/lung/news/20210812/hospitals-struggle-...
https://www.bloomberg.com/news/articles/2022-01-07/hospitals...
https://www.aamc.org/news-insights/hospitals-innovate-amid-d...
https://www.washingtonpost.com/health/staff-shortages-hospit...
There are many more sources citing hospitals struggling to find nurses, your last two citations demonstrate how desperate hospitals are by re-hiring folk who refuse to get vaccinated or are asymptomatic. How desperate do you have to be to put patients at risk of getting infected from their health care worker? I mean talk about rock and a hard place, that's a fucked up position to have to be in and shows that there are very few other avenues to go down.