> People like the service that the middle man provides. They may not like the middle man, the fees, etc. but tell someone that "your transactions are not reversible, if you lost your money that sucks I guess, even if we messed up" and they will be happy to pay that transaction fee with another provider instead.
This might not be entirely realistic, but the idea of passing that choice on to the end user seems interesting:
Payment of 12.99 EUR (VAT of X% included) to $vendor for $service, choose one:
[ ] - regular payment, 0.50 EUR fixed fee
[ ] - safe™ payment*, 2.00 EUR fixed fee
* safe™ payments can later be disputed and reversed, if necessary
Or something like that. I mean, regulation aside (this is a thought experiment), I can already choose whether I want to pay extra for tracking for international deliveries and when buying goods, sometimes extended warranty/insurance is offered as an option. Why wouldn't I get the choice whether I want my payments to carry less overhead OR have the protections you'd expect with the "middle man", as a choice within the same payment platform?