Some shows have different licensing restrictions than others. Particularly the Toei shows (Fist of the North Star, Digimon, Captain Harlock, etc) and many of the old ADV rescues (Le Chevalier D'Eon, Chrono Crusade, and yes, even Peacemaker) can be streamed here on the website, but not through devices.

It really all depends on the show in question.