The types of people that moved to Gab hate "big government" and are against market regulation, but suddenly want the government to step in when companies blacklist them. They want the ability to "just ask questions" when it's clear they only intend to create inflammatory arguments so they get the excuse to degrade people. People like that complain people shouldn't force their views onto other people and then force their own hateful views about abortion, birth control, etc.
I mean hell, r/conservative said this point themselves, in a strikingly moment of hilarious self-awareness:
https://www.reddit.com/r/SelfAwarewolves/comments/hle529/goo...
The reason they get turned away from every and all social networks thusfar is because they cannot conduct themselves in a civil manner.
If Visa won't let you fund your hate speech, then I guess go find someone who will. If no one is willing, maybe that says more about you than about them.