They allow people to source alternatives to exotic animals. They allow those with allergies to source a pet that is non-allergenic, apart from a fish. They allow those with hearing impediments to source a pet with an affinity both have little dependence on the sense of hearing. Reptiles can only be sourced through captive bred or legally harvested stock. They wont be cheap throw-away pets.
Snakes readily feed on dead food.
CALM will continue to vigorously pursue illegal activities involving native fauna. Demand will exceed supply initially. Many pet shops will stock the required peripheral keeping paraphernalia. Care sheets will be available. Safeguards are in place to exclude children and novices from sourcing dangerously venomous snakes.