I feel like we're talking past each other.
You said: dev coin is a good model-- e.g. writer creates something, uses devcoin, 90% goes to them, 10% to devcoin miner.
I don't understand why a writer wouldn't just use dollars-- create something, sell it for dollars, writer keeps 96%, PayPal gets 4% for processing the transaction.
Or Bitcoin: create something, sell it for Bitcoin, writer keeps 99% BitPay gets 1% for processing the transaction (Bitcoin can do this because it is more efficient than PayPal/credit card/traditional fiat, that is where the wealth is created).
Or is there some magical way that using an alt coin creates wealth out of thin air? I don't see it....