NuBits, NuShares and the cryptosystem they create should have a positive effect on PPC, as stated earlier, not all of the shareholders will cash out of PPC paid through dividends. Besides, NuBits have the ability to absorb massive amounts of USD, if they can partially take over the role of USD in internet-related payments, the combined capital of NuBits and NuShares can overwhelm the capital of PPC itself.

It yet remains to be seen to what extent the capitalization of NuShares will grow and what kind of yield will they generate, but I wouldn't be surprised if in a couple of years the dividends paid to NuShareholders would constitute a significant % of the total PPC supply.

How much of USD will go into NuBits? A kind of reference might be the CoinDesk State of Bitcoin Q2 2014 report, pages 15 and 16,  where it is mentioned what kind of services can be impacted by crypto-currency adoption. The numbers are astonishing.