Visa/MC have built walled gardens which provide many services.

Some of the services include: - Consumer Credit - Fraud protection - Payment network - Discount service (rewards, etc) - Concierge services - Rental/Ticketing services - etc

No one is denying the utility of what they have created. The problem is they’ve built monopolistic walled gardens where these are all bundled together which raises overall costs while also prevents competition.

These services can easily be unbundled (for example in India the payment network is open and cost free, so anyone can provide those other services on top of the payment network).

What has made this far more urgent, however, is that these companies are located in the U.S. which has recently leveraged the power these networks have to attack EU citizens for frivolous reasons.

So even if the MC/Visa business model was perfect, it would be foolish for even American allies to rely on them given the actions of the current administration.