Can't see that happening. Too many people keep and breed boas these days in age, they would not have means to control it.
In Brazil for instance, the hobby of keeping snakes is very recent. People are not allowed to import or keep snakes other than red tail boas originated from Brazil. Of course you will find corn snakes, pythons, etc that were smuggled into the country, but you could end up in jail if you get caught.
Since they aloowed people to keep boas recently, the law says that you are only allowed to keep CB (there are only half a dozen authorised breeders in Brazil), the snake must be microchipped, and the owner must keep the invoice and certificate given by the breeder.
If you fail to produce this documents and you get caught, you will lose the animal and you will be heavily fined.