The arguments I've seen in favour of supporting DRM are all about enabling the delivery of "protected" media to the consumer - but it's competition of a Prisone

The arguments I've seen in favour of supporting DRM are all about enabling the delivery of "protected" media to the consumer - but it's competition of a Prisoner's dilemma kind that drives them there. If any one vendor - it doesn't matter whether it's a browser, or an operating system, or a graphics card, or a monitor, etc. - agrees to add DRM technology, they hope they'll get an increase in usage / sales at the margin by convincing shy media producers to distribute. The only way to stop it is to band together and refuse across the board. Individually, everybody gets picked off. You can't be the only monitor that can't play movies, or the only browser that can't show the latest episode of GoT.