I'd assume it's mostly because not requiring an account/subscription isn't working particularly well for them. Whether they are in desperate financial straits,

I'd assume it's mostly because not requiring an account/subscription isn't working particularly well for them. Whether they are in desperate financial straits, or their PHB's need to pretend they're doing something useful, or they've grown resentful of working for crap pay so the world can read their work for free, or "subscriber growth" is the newest fashion in game-able metrics, or ...