This reminds me of a question I've had for the longest time (+): why is it that in the US wiring money between accounts is so expensive or difficult? Whole ecosystems of companies have sprung up (PayPal and Stripe come to mind, and apps such as TransferWise) to reduce the friction when the banks could easily set up a way cheaper system that would actually be better (privacy etc.) for the consumer. The EU seems to be…
But the total cost of ownership is expensive. I mean the time and money to develop the process to integrate with your bank on ACH is going to be a heavy fixed cost and that is one of the reasons of the cost. Now Wire transfer and other type of transfers, they use different system and the costs varies because of that.
Also regarding about the speed of transfer, that is hinging at the speed for the banks to reconcile all transactions with the Central Bank. I think the US Central Bank is planning to implement real time transaction and that consequently will speed up transfer.