A counterproductive nuisance?
DRM for eBooks is an irritation but nothing more than a circumventable nuisance.
People parting with money to obtain access to e-publications ought refuse to regard their payment as nothing more than rent. Tools exist to liberate e-books. Sooner the broad population becomes aware of this, the better. Rental of culture (both 'high' and 'low') is a business model best relegated to oblivion via mass user disobedience.
In another context, at least one leading publisher of academic journals offers non-subscribers an elaborate set of options. For a ridiculous sum they may purchase a copy and download it. For lesser sums they may 'rent' online access for specified times. Of course the savvy go off to Sci-Hub but presumably there are plenty of takers for purchase of ephemeral digital sequences and for the privilege of reading online.
Biting the hand that feeds IT
