Well, dreaming about how the world would be able to organize such a conspiracy does sound like conspiracy theory to me. But that is not my point, what I wanted to say is that, even if it turns out the coronavirus was leaked from a lab, practically it is impossible to prove that this was intentional.
If the release was intentional then there was almost certainly a great deal of contingency planning in place, distribution of a prediscovered cure, etc. The release itself is easy enough to conceal, the planning to take maximum advantage of it, not so much.