Favorite theory links the two. Animals infected in lab were supposed to be disposed of, but instead sold at the market. It isn’t necessarily that far-fetched: if you are tasked with incinerating a rare animal that you know is going for cash in the nearby market, there is temptation to sell it instead of destroying.
Because there is "a" wild life market in Wuhan which does sell wild bats from far away (and many other animals which can get/transmit covid).