Earlier quoted context omitted.
If they aren't highly unpopular then there should be a demand and market for services/platforms that do allow those opinions. Even though not as large, another company/service should be able to fill the void.
I was under the impression that the main thing preventing "another company/service should be able to fill the void." - is the rules and hoops / unchecked power of the visa/mc/amex etc. I have seen rumors about us gov and other govs pressuring cc authorities to do things in certain ways as well, however my senator says there is no proof rumored pressure changed anything in one case that I write about. there is demand…
https://en.wikipedia.org/wiki/Operation_Choke_Point
Operation Choke Point was a 2013 initiative of the United States Department of Justice,[1] which would investigate banks in the United States and the business they do with firearm dealers, payday lenders, and other companies believed to be at higher risk for fraud and money laundering.
This operation, disclosed in an August 2013 Wall Street Journal story, was officially ended in August 2017.
...
On May 29, 2014, the U.S. House of Representatives Committee on Oversight and Government Reform published a highly critical staff report that concluded:[21]
“ Forceful prosecution of those who defraud American consumers is both responsible and admirable. However, Department of Justice initiatives to combat mass-market consumer fraud must be legitimate exercises of the Department's legal authorities, and must be executed in a manner that does not unfairly harm legitimate merchants and individuals. Operation Choke Point fails both these requirements. The Department's radical reinterpretation of what constitutes an actionable violation under § 951 of FIRREA fundamentally distorts Congress' intent in enacting the law, and inappropriately demands that bankers act as the moral arbiters and policemen of the commercial world. In light of the Department's obligation to act within the bounds of the law, and its avowed commitment not to "discourage or inhibit" the lawful conduct of honest merchants, it is necessary to disavow and dismantle Operation Choke Point.