[fortran77]

There's good reason to believe that the technology is simply expensive and hard to manufacture, not that there's some giant conspiracy of patent trolls. And the use of "troll" here, when there's actually a product that's being made, is inaccurate. "Trolls" are companies that buy up dubious patents, don't actually make or invent anything, and sue everyone and hope that they settle instead of challenging the patent in court.

Every new generation of LCD and OLED has plenty of patents, and there are affordable products eventually. OLED in particular started out very expensive and now is everywhere.

E-Ink is just tough.