Companies across all countries have proprietary data that they are using to develop treatment options.

Not when there's money to be made. The Gates foundation does seek a Return on Investment, and has publicly stated they wanted to create good markets for vaccines.

Gavi/Gates/GSK and other big pharma companies might be claiming to help the world, but they're also seeking to get a return on their research funding. Even in academic circles, there isn't really a lot of information sharing.

Sure, but what does this have to do with a single state actor that hides everything they do (with fatal consequences in 2020) hacking another?