This doesn't really pass the sniff test. There are a LOT of different countries and states in the world, with a fairly wide variety of responses to Covid. I'm not aware of any country where they managed to magic up some hospitals fully staffed to handle Covid cases. If it didn't happen despite all the different societies that could have attempted it then it is far more likely that it was considered (and tried even!) and rejected as unworkable.

In other words, you are certainly not the first person to think "what if we just had more hospital beds and staff and throw heaps of money at it to make it happen". The reason no country (that I know of) has done this is because it is impractical. The alternative is a grand conspiracy involving collusion in hundreds of countries and states and their leaders, including all the departments of health and the various officials, in democratic countries, communist countries, authoritarian countries and so on, some of whom are literally at war with each other.