True. Perhaps more important will be the value of Safecoin vs fiat (or perhaps bitcoin). Over time, safecoin will be less inflationary than fiat (unless we have a massive collapse in aggregate demand in the 'real' economy), so using Safecoin to buy computing resources will/should be cheaper than fiat, which should put us at a competitive advantage vs competing services priced in fiat like AWS.
One problem with an appreciating currency could be hoarding, if people think the value is going to increase, which would be counter productive to a successful network. Here's where farming is going to be important as I think people will be much less reluctant to spend their Safecoins on PUTs if they've actually earned them than if they're buying them on a speculative punt.