Isn't the reason obvious? Healthcare in the US is an insanely profitable and powerful business. If everybody gets infected, tens of millions will need expensive treatment the rest of their lives. Healthcare will make tens of trillions dollars. Remember the anecdote that there are no laws that big capital wouldn't break for the 3x profit? Here we are talking about profits comparable with the entire world's wealth. We have an opportunity to witness this sociopathic system in its nature state: the virus needs 1-2 months to spread everywhere and during this short period, the healthcare system is going to openly block any attempts to prevent its spread. After that it's going to open the gates and let the tests, masks and vaccines flood the market.