Don't think this is a sustainable meat choice. Can you imagine raising lions for food...what those "farms" will look like? You will need a cattle ranch to feed the lions.
From the article
A long post on the Smithsonian website today pleads with the public to not let this obsession with lion meat get out of control, in the wake of a Burlingame restaurant offering $70 lion meat skewers and a restaurant in Florida selling lion meat tacos.