$2M and growing is significant, although it's only one of many companies. Every other day another business sets up with Bitcoin as a medium of exchange that is a low-fee, no-chargeback transactional currency. The fundamental value of such a currency, with a quasi-fixed money supply, scales as some multiple of real circulation. The momentary value is proportional to that fundamental value multiplied by short-term expectations of the BTC as an asset, which is driven by growth in usage and hype.

It's entirely possible that 99% of the value of a bitcoin is a self-reinforcing set of asset-bubble expectations, but this is something that really didn't exist before, that we don't have great paradigms to explain, that is undergoing massive daily shifts in its usage. It is explicitly not a stable national floating fiat currency with people who circulate the money their banking system provides & pay their taxes in those notes & denominate their salaries and grocery bills in sticky quantities of those notes, and so it's not directly comparable.

It's one company's business. I didn't cite any other businesses such as silk road, transactions on bitmit, and businesses that's outside bitpay's sphere of influence.