there is an ample market to buy his BitBTC because excluding exchange rate risk, BitBTC pays twice the return as BitShares.
So BitBTC is a prediction market on what the future resale value of BitBTC in terms of BitShares will be.
Okay then, thanks for laying out the scam in such clear terms.
Suppose I am a risk neutral investor. I decide to invest in the bitshare system seeking to maximize my bitshare-denominated returns. I have to choose whether to invest in bitBTC or bitshares.
As long as the current resale value of 1 bitBTC = expected future resale value of 1 bitBTC, I will invest only in bitBTC and never willingly hold bitsharses.
Why?
Say the rate of return on bit shares is r. As a linear approximation, the expected rate of return on bitBTC is
2r+(expected future resale value of bitBTC/current resale value of bitBTC-1)
But we assumed that the expected future resale value = current resale value, so this is simply equal to 2r.
Which rate of return do you prefer? 2r with bitBTC or r with bitshares? Yes, 2r is better.
But this is impossible. Someone has to agree to hold bitshares voluntarily. As long as returns on bitshares are dominates by returns on bitBTC, no one is going to do this. To get people to hold both bitBTC and bitshares volintarily we need
r = 2r + (expected future resale value/current resale value-1)
Under this condition, both assets yield the same expected return. This is how country's maintain fixed exchange rates under free markets, by pegging their interest rate to the US FED's interest rate.
The equilbrium condition implies
Expected future resale value = (1-r)×current resale value
bitBTC have to depreciate steadily against bitshares. Otherwise, no one will willingly hold any bitshares at all. What about the value of bitBTC vs. BTC? To maintain parity against BTC, you need bitshares to steadily appreciate against BTC at a rate of r. This perpetual appreciation is clearly impossible. But wait, it becomes even more absurd.
For bitUSD and bitGOLD to maintain parity, bitshares must also appreciate against GOLD and USD at a rate of r. For all of this to happen simultaneously, you will need the USD price of BTC and gold to remain constant over time.
Let's review the requirements of the system for parity to be maintained:
1) Relative prices of all real world assets excluding bitshares remain constant over time.
2) Bitshares perpetually appreciates against all other real world assests
Sound plausible? Well, of course it doesn't, this is a ponzi scheme.