When people with the wrong opinions (on who knows what, frankly, the list keeps changing) get banned from banking systems the very same people will be in the thread defending the sanctions and censorship action.
“Just build your own bank.”
“Just build your own currency.”
It's like the tech tree from the Civ games in reverse.
To develop 'Social Network' or 'Digital Currencies', you need 'Server Farm', 'Internet', and 'Power Grid', and to have those you need everything from 'Intercontintental Data Cables' to 'Semiconductor Manufacturing', and way back to extraction and refining of raw materials..
They do it to regular people every day, I was banned countless times from websites when I was a stupid kid, and more than a few times as an adult. No one cares until it happens to famous racists. I wonder why.
It might not have happened yet, but I suspect we're heading in that direction. We've seen 'speech related' bans from Paypal and crowdfunding sites.
Paypal even deplatformed the (UK-based) Free Speech Union (although they reverted that decision after the backlash)