Mike Salguero likes to say that ButcherBox, the meat subscription company that made him a multimillionaire, was “built on bacon.” Though entrepreneurs can often overuse hyperbole and flowery language, ...

Mike Salguero’s online meat-seller has roared to $550 million in sales by outsourcing food production, not owning it. Now growth is leveling off as customers get more expensive to enlist. Salmon is so ...