> next virus may not require ventilators to help at all so securing that is not a solution.
I would be interested to know if I'm missing something, but I believe that respiratory viruses are the only ones that have a large chance of becoming pandemics - sneezing, coughing, breathing, speaking are the only gestures that can spread with no real way of fully protecting yourself from it (save for wearing gas masks). Now, I suppose in principle you could have a virus that causes respiratory symptoms, but that affects some other organ more than the lungs, but I'm not sure how plausible that is biologically.
So, I think it is by far most likely that the next pandemic will also require ventilators and face masks. Stocking up on both everyhwere in the world would be a good idea.
Also, it should become required practice for all countries (and even most large companies) to have significant pandemic reserves. We know for sure that a new pandemic will arise in the future, and there is a good chance that it will happen again in the next 50 years let's say.