Throaway to not get sued. E-ink, the company, holds the patents of the pigment core tech that makes "paper-like" displays possible and strongarms the display manufacturers and the users of their displays to absolute silence. Any research project or startup that comes up with a better alternative technology gets bought out or buried by their lawyers ASAP. E-ink don't make the display themselves, they make the e-ink fi…
So yes the patent is responsible for the existence of the monopoly, but it is also responsible for the existence of the product that the monopoly is built upon.
I think a 10 year limit on the monopoly is a good compromise (which is basically what the patent system is already doing). Even with those companies patenting DNA... after 10 years the argument is over.