Because you don't want them too. Some random startup teasing out ideas and mostly ignoring privacy when they have a dozen users is one thing. Big Tech rolling

Because you don't want them too. Some random startup teasing out ideas and mostly ignoring privacy when they have a dozen users is one thing. Big Tech rolling out a similarly ill thought out feature to 500 million people is something you really don't want and which understandably draws lots of scrutiny. So you naturally get layers and layers of bureaucracy to try to prevent blunders, and they still happen.