And sometimes, they do come back. Shout Factory now streams Kamen Rider Kuuga legally. But guess what? The Shout version cuts the episode previews. The IA rip from 2009? It has the previews. It has the original commercial bumpers. It has the "Next Episode" narration by the lead actor.
If you know the right search string—"Kamen Rider Kuuga TV Raw," "Kamen Rider 555 English Softsub"—you will find the uncorrupted, untouched, pre-streaming versions. These are the fansubs from Mythical Rider Fansubs (2003) or Dong Subs (2006). They are flawed. They have honorifics left untranslated. They call the finisher a "Rider Punch" with a gratuitous font effect. kamen rider x internet archive
As Toku became trendy (thanks to Power Rangers nostalgia and the explosive success of Shinkenger / Gokaiger in the Sentai fandom), the rights holders finally noticed the West. Legal streaming arrived. With it came the digital guillotine. MegaUpload fell. TV-Nihon’s direct downloads were nuked. OZC-Live’s IRC bots went silent. And sometimes, they do come back