I don't really see why suddenly a lot of organizations should come up wanting PIv6. I think the need of PIv6 would be quite compareable to PIv4, and at least nowadays, the PI-Prefixes aren't really that problem as far as I see. And, as pointed out before, the current PIv6 policy can even be interpreted as source of much more v6-routes in the DFZ anyways.
That is not so simple in post-communist countries. As I know, there are around 200 ISPs in Germany. In Poland, we have - 2000-3000 of ISPs.. however they are very little sometimes - i.e. serving 300 or 700 customers. let's say - 10 euro /month per customer (+ VAT) * 700 = 7000 euro of a budget. Pay taxes, pay salaries, pay lawyers, office, investments, upstreams, infrastructure... I's just a little for the owner if you compare it to large ISPs. So, if there is no possibility to use IPv6 PI for own customers (/128 for customer) any more, the only way is to use other LIR's part of PA space. There is NO WAY that they will pay for beeing LIR. Regards, Marcin