It’s not hard to start a venemous snake farm. Most states allow venemous snake keeping with various levels of oversight (some states there is no oversight) I think it has more to do with how hard it is to get venom out of a reclusive rear fanged snake.
The main point is just that “naturally occurring” has nothing to do with price.
Coral snake venom is naturally occurring and has medicinal uses. $4,000 per gram.