AFAIK, BTC circulating is good for the ecosystem as a whole.
What appears to be closed loop ecosystems; OpenBazaar, Bitify, Bitsquare, is actually good for the BTC ecosystem as a whole because it begins the conditioning process of using BTC as 1st choice method of trade vs fiat.
When we stop trading coin for fiat and only trade it for goods, we will see BTC's true resilient intrinsic value.
iirc, there are plenty examples of bitcoiners living solely off of BTC, with only rarely sometimes having to trade for fiat with all the add ons available as of now, eGifter, Gyft, Uber, Lyft, Airbnb, Purse.io, BitPay Card, etc.