The idea that the publishers would go to the time , energy and expense to develop a new (stronger) DRM scheme, then not
eventually apply it to all of their books is naive. They will certainly roll it out in the venues they care least about, like Overdrive/libraries, but if it works it will end up being used everywhere. Forever having multiple protection schemes depending on where a product is distributed would be a logistical headache no business would intentionally inflict upon itself.
