That's assuming that the potential users would even consider using their own coin.

The big thing that you likely aren't considering about all of this is that just because there is a potential market, it doesn't mean much when you consider that a lot of Chinese involved in Bitcoin use it as a means of escaping their national currency (which is often getting devalued). Having a currency that is just mirroring their own currency, in an inverse relationship, with no hope of moving it out of their own currency and into, say, USD, that would not be acceptable for ma lot of them.