Most media piracy is a direct result of it being somewhere between inconvenient and impossible to consume that media legally. See, for example, the tremendous drop in music piracy resulting from various music streaming purchases and Apple's popularization of direct track purchases before that.

Movies and shows, by comparison, are not just absurdly fragmented* but often literally unavailable not long after release for bizarre tax dodge purposes.

(* Check out the official guide on what services have the Pokemon cartoon: https://www.pokemon.com/us/animation/where-to-watch-pokemon-...)