Apple have always done what they wanted. In the Jobs era the biggest Apple Store in the world was on Regents Street in London, and Apple paid the local council vast fines each month because Jobs decided that the required illuminated fire exit signs would have ruined the carefully designed interior.

Eink charge around $30 for their lowest-spec screen. Device builders have to price that in, along with the niche market, and the fact that those who want to use Eink are unlikely to be replacing it for several years.