You don't have a right to service from a private company. Why are people so surprised and or angered by this? The law is clear: you can be denied service as long as the reason you are being denied is not your sex, religion, etc. [Protected classes]. If you go to a restaurant and they don't like you they can throw you out, and so can a hardware store, and a movie theater, etc. (Exempting the protected reasons). Find a…
The other issue here is the person was banned for life from using YouTube, which is a far cry beyond having some of his content removed for not fitting the platform.
With great power comes great responsibility. The banhammer is being wielded too sloppily and that is hurting people in real ways, because parts of the web are now of central importance to daily life. Private companies in other sectors that can similarly impact people's lives are regulated in what they can do to their customers.