my theory is that any payment provider that grows large enough will eventually become just like PayPal

when you enable international processing fraud rates spike (double-digit percentages in some countries) and you end up building an agressive fraud protection scheme like PayPal have

the new startups have the advantage of only serving a relatively small less risky market, and being obscure enough not to be a target of fraud groups

these new startups have nice features such as simple API's etc. but I haven't seen anything yet that is revolutionary in terms of technology that will break out of the fraud/blocking cycle

Edit: to add, I am not being dismissive of the new startups, on the contrary I am using Swipe on a new product, and I really do hope that one of these guys nails this space