That's not totally true. It greatly depends on the platforms. A large number of small ISPs use
Mikrotik across the world and it doesn't support RPKI RTR as yet in stable release. It's there in beta but ISPs cannot run production network on beta version of the OS. There have been challenges of platforms even crashing when enabling RPKI RTR.
So whether it's easy or hard depends on:
- Which routers are being deployed on the edge
- Who actually runs the network. If it's internal team, deployment becomes just a project to deploy. But if it's outsourced, it becomes a grand project to get senior management approval, get cost estimates, and actually deploy it. So this makes it hard procedure wise (unfortunately).