You're absolutely right. The only motivation would be latency, but you could have specialized services that run at the edge, if that's so important, for exampl

You're absolutely right. The only motivation would be latency, but you could have specialized services that run at the edge, if that's so important, for example if payment verification should take 500ms instead of 3000ms. But you could also just rewrite the protocol to have less back-and-forth sequential data exchange, which is a smarter approach.