[zinekeller]

> You get an PI address block and ask your ISP to advertise it on your behalf

And? Get nothing in some regions because all of their ISPs aren't willing to provide this service even with money?

I know provider-independent addresses, but don't pretend it'll solve the problem of IPv6. The fact that you need to do some service wrangling rather than "take this IP for private use, just don't ask us when IP conflicts happen" (and ULA implementation is inconsistent even in enterprise routers) means headaches abound that didn't exist for IPv4.