Are COVID lab leak and market origin theories incompatible?

Epistemic status: pure speculation, want to hear what more informed people think

In public discussions of COVID origins, I observe an apparent implicit assumptions that the two leading theories—lab leak and Wuhan market origin—are incompatible, and evidence for one is automatically evidence against another.

It feels to me that there is a plausible theory for both being true—the virus was created studied in a lab, some animals were infected as part of that research, and then some low-paid employee was responsible for properly disposing of the animals, but lacking full understanding of the dangers and needing quick cash, they sold the animals to be then resold on the market. I am originally from Russia, and the level of corruption and cinicism there is such, that this would definitely be a very plausible scenario there. Is China sufficiently better than that? Am I missing some reason for why this is not among the spectrum of theories being considered?

In my mind this reconciles a lot of circumstantial evidence—avoids the need to believe that the fact that Wuhan lab was studying related topics is a pure coincidence, and also compatible with all the evidence of early cases near the market and traces of COVID in the market...