[FairyKing]

Uh... I understand being frustrated at the lack of official English releases for toku, but taking that anger out on K-dramas and that fandom makes no sense. They're different genres, they're not even from the same country (the K literally stands for Korean), the only thing they have in common is not being in English. You might as well ask why fans of Spanish telenovelas or Swedish crime dramas don't branch out into toku.

The shows Rider, Sentai, Ultraman etc. would be competing with are western superhero shows. If you need to blame someone for Kamen Rider not being on Netflix (besides Netflix for just choosing not to pick it up), blame Marvel and DC for how much space they take up in the superhero market, and for their constant pushing of reboots, remakes and recycled ideas that hinder anything new or different.