I would argue facebook isn't a 100% opt in service at all. When political advertising on facebook won Trump the election, that changed the global landscape for

I would argue facebook isn't a 100% opt in service at all. When political advertising on facebook won Trump the election, that changed the global landscape for everyone, regardless whether they were on facebook or not. It's like saying the automotive industry or the oil industry are a 100% opt in service, so why regulate them either? Facebook has as much of a tailpipe as any other commercial enterprise with effects felt by everyone.