Yeah, this. Right now, BTC is more of a speculative investment than it is a currency. You just can't have insane volatility or even too much uni-directional movement in your medium of exchange.
For a merchant to offer something at a particular BTC price, that merchant would have to update its prices at least daily, if not more so. This to avoid losing money or overcharging himself out of the market, depending on the direction of the currency. It's just not practical at this point.
And, it's a catch-22: As long as it's a speculative investment, it's likely to remain volatile. And, as long as it remains volatile, it's likely to remain a speculative investment vs. a "true" currency.
For a merchant to offer something at a particular BTC price, that merchant would have to update its prices at least daily, if not more so. This to avoid losing money or overcharging himself out of the market, depending on the direction of the currency. It's just not practical at this point.
And, it's a catch-22: As long as it's a speculative investment, it's likely to remain volatile. And, as long as it remains volatile, it's likely to remain a speculative investment vs. a "true" currency.