if you think what certain payment processors are doing with Steam and itch.io is wrong, might it suggest reporting those processors for abusing their market powers to the respective authorities in your country? Japan has already started an investigation, the more countries follow the better Find the correct authority for every EU country:

Competition Policy

National Competition Authorities

National Competition Authorities

For Germany:

Bundeskartellamt

Hinweise auf Verstöße

Hinweise auf Kartellverstöße

For Austria: https://www.bwb.gv.at/beschwerdeeinbringung For Switzerland*:

Hinweise zu unzulässigen Verhaltensweisen

For the Netherlands*:

Tip off | ACM

For France*:

Signalement simple

* Please double check, as it has no experience with this countries legal system