I suspect that Mircea Popescu, as in Mircea Popescu's Options Emporium (MPOE) might suggest that the fluctuations in price aka volatility of exchange rate thing is actually a finance thing rather than purely a business thing.
Aren't options supposed to be the financial world's answer to such "problems" ?
Isn't being caught out by a change of price aka exchange-rate really just a symptom of a failure to properly hedge oneself with an appropriate array of options?
Oughtn't payment processors and such be able to offer a stable price across a span of time by proper employment of options?
-MarkM-
I do not know enough to give an informed opinion

. Financial factors are undoubtedly having a huge impact on the development of cryptocurrencies. As stated in my original post, I see cryptocurrencies as any other technological innovation and apply that perspective. Price stabilization mechanisms that are of financial nature are very interesting and a must for a long term viable currency, but it is also not a necessity at the current state we are in. Being in the early stages of the development I would argue that diffusion to merchants is enough by simply being able to accept cryptos that are traded into fiat currency using the exchange rate at that moment.