BTC/USD over time. The scale of the price axis is logarithmic. Horizontal lines have been added to show the price increase after periods of increased volatility.
This exponential increase in price could reduce long term, but I think it's important to use this as a base when predicting, it's unfortunatly not very bear friendly, but it is the data.
Possibly I should have made the line steeper, to end 40 or so BTC higher at the right of the chart.
We still have 0% of most markets and BTC automatically adjusts to changing load. It's both popular now and it has more uses the more the market grows.