In my statement I wasn't trying to center museums particularly. The OP was asking about nature conservation and museums/libraries are the aspect of preservation of the natural world or care of people and communities that I'm most familiar with. Our capitalist society doesn't place much value on these. [Update: wording]
Sustainable tourism is a good example that is helping add value to the natural world within the constraints of our capitalist society. When an animal is worth more alive than dead then local people are more likely to protect it. Gorilla Trekking in Rwanada and Uganda are examples where the tourism dollars had greatly reduced poaching in the parks. Sadly things are unravelling without tourism money coming into the country and poaching is on the rise.
Unfortunately there aren't going to be many jobs in this sector currently until COVID-19 is brought more under control.
