@contrapunctus This should technically be possible once the basics have been figured out. Like, how can I send money from my computer to my instance? How can money be transferred between instances? How can instances pay creators?
And most importantly: Who would own the money in transit? Solutions like @Taler would be great, but it would require instances to essentially become banks from a legal standpoint.
Another way would be to initiate a direct instant bank transfer from the customer to the creator by utilising banking APIs like FinTS. However, this would require giving your bank details to your instance administrator, isn't guaranteed to work with every bank, probably only works for SEPA transfers and makes international transfers unviable due to fees.
In my opinion, these are fundamental problems of the web that, if overcome, could impact society quite a bit.