A customer shouldn't be the one going through such hops in order to "satisfy" a provider who can't bother to accept a widely used mean of payment

Sure. In theory. In real world being a customer often means adapting your expectations and finding workarounds to get what you need. If this solution could have worked, building your own data center would seem rather extreme and unpractical.

Being a customer also means making responsible choices in what companies you do business with.