in the world there are ~50 million people with a wealth of at least 1 million $.
in the world there are ~1 million addresses with at least 1 bitcoin, so we can really roughly estimate ~1 million wholecoiners (probably today there are far less wholecoiners around).

So in some years, when the world will be enough bitcoinized, 1 bitcoin will buy roughly what today can buy 50 million dolllars (denomination will be far higher cause inflation).

And I'm probably still not bullish enough.