When I was a kid there were very few black people on television, and no major black characters (I'm from the US). Likewise there was no sex; Laura and Rob Petrie slept in separate beds, etc. There were three majors-- CBS, NBC, and ABC-- and people with names like Pastor Bob from Decent Society Now! would get their folks to pressure network departments, and these departments found it easiest for business to just not run this stuff. All very comfortable but all very wrong.

Google, etc., seem a lot like the majors of our time. Sure they are private businesses acting according to the business environment they find themselves in, but the outcome may be, in the long run, bad for all of us.