If you're so desperate for a dvd version, import them. Problem solved.
Fact is they have no reason to release the dvds here, it's not Bandai's fault, it's not 4kids fault, it's everyone's fault. The episodes probably had more pirates than initial viewers, it was a niche show, and the people who it was geared towards have a pretty strong history of just downloading kamen rider episodes rather than watching them on broadcast. The DVDs are going to be the exact same story. Don't blame the companies for killing the show, blame the people who claim to support it, but only online, where they're making no revenue off of it.