There is also an inherent kind of entitlement that people have. Putting the lack of visibility of privacy on the totem pole of priority, people like free things. When you start to charge them for an objectively worse service, you tend to piss off your user base.

Measles is virus of the paramyxovirdae family and one of the horrible consequences of infection is the rare but devastating SSPE, for subacute sclerosing panencphalitis, which is where brain damage comes from.

https://en.m.wikipedia.org/wiki/Subacute_sclerosing_panencephalitis

Source: sketchy, Robbins and contran.