If you have an idea for how to cure those diseases, I'm sure there are plenty of companies that would love to hear it.

Just saying "we should focus on this" isn't useful; current production capacity is already pretty fully utilized for current standard-of-care treatments or clinical next-generation treatments. If a cure is found, then sure, there are companies that would be willing to sideline some of their current treatments in order to make this cure. But the data supporting it needs to be good, because otherwise, you're depriving other people of their current treatments.