Can we fund development and stockpile reserves of new, effective antibiotic, all while not selling it to anyone else? As an insurance against bioterrorism, if nothing else.
https://en.wikipedia.org/wiki/Phage_therapy
Which is using viruses to kill bacteria.
Also I imagine that gene editing might also become a tool in combating infections in the near future.
I assumed that the problem with multi-resistant pathogens was that the patient may not live long enough to try all antibiotics.
But over time it's going to get worse and worse.