unfortunately, there is no need for endusers to see an advantage.

there will be an immediate disadvantage to not having it once content wont load without it.

i fear that the pressure of youtube utilizing it, would be enough to convince most users to use it.

also, most users probably wont even know they use it,
chrome alone has a 65% 85% market share.

its the platform providers wholl have to weight excluding at most 35% 15% of their users against the benefits of drm.

and with potential support from any chromium derivatives, that number gets lower.

not to mention, that some of these 35% 15% may switch browsers in order to access the content.

EDIT: safari also uses it, so its about 85% not 65%