I enjoyed the article very much. That said, I think bitcoin may be seem as something as unlimited as checks or money orders. Imagine that money orders were limited. Unlimited checks could make up for that. So, even if bitcoin is limited, cryptocurrencies themselves are unlimited.
The limited suply of bitcoin will only be special enough if people simply disregard all other competitors. Considering bitcoin's frail current state, and the market power of financial intermediaries that may want to join the cryptocurrency dance, the limited supply is far from being a certainty, in my opinion.