It is possible it is useless, but if so it is surprising that so many stakeholders continue to invest in it. I don't know what the facts are but it is certainly

It is possible it is useless, but if so it is surprising that so many stakeholders continue to invest in it. I don't know what the facts are but it is certainly plausible to me that DRM that only holds out for one month still pays for itself. It seems that the prior assumption should be that there is a good reason for the presence of an expensive and reviled feature. The only one I can think of for DRM is that it is useful, chiefly by driving increased sales due to fractional conversion of pirates.