I don't really understand how this is true. If I google, I don't see any evidence that any patent or block of patents is blocking the "tech". Could you specify which specific patent is blocking?
> tied up the tech stack in so many patents, NDA's, and exorbitant prices that no one wants to touch it.
But... you do realize there's lots of startups that enter the bistable display space? eg: ClearInk. https://www.clearinkdisplays.com/ They even use the exact same underlying principle which is electrophoresis.
If you go to any display conference you'll easily see that most of what you're saying comes across as highly inaccurate or even ridiculous.