Nope , I think you don't understand what the nature of what you are implying is , like any website GAB needs an infrastructure to support it , these providers are not forced to do business with GAB if they don't want to, you can't force a private business to go against their own terms of service to serve a company with questionable morals , welcome to the free market.
You can easily hold Neogaf to the same free speech notion you are preaching , size has never been a factor in any case , like Twitter here you can't say certain things that go against the TOS doing so would see you removed from the site , the same goes for Twitter , YouTube and Facebook we sign that away when you become a member. So there's no point in playing coy when it comes to holding other sites to that same standard .
Do you take the same issue when banks refuse to take in drug money or money that came from an I'll gotten means. When you sign up to a service they can just as quickly revoke it.
This does not matter , what matters is making sure that your company has a good reputation in the public's eye, doing business with a company like GAB of the Dailystormer only brings in a negative spot light , nothing is stopping these Alt Right tech CEOs from making their own infrastructure where they can preach their hate and intolerance
edit: removed some englishing to make something clear