Well, since your so well researched and academic on this matter, would care to make a fiat wager as to whether the ETF will attract a lot of investment? I might even let you determine what "a lot" would equal.
Did I say it would not? I wrote
So, I suspect that bitcoin funds attract (and will continue to attract) only investors who are naive both technically and financially.
... and surely there is a good supply of those. How many of them will buy bitcoin funds, I cannot guess.
As for the bet, I said many times that I do not bet unless I am fairly certain that I am right, and I believe I know why the other guy is wrong. Which is not the case here.
In order to bet one must assign numeric probabilities to future events, and have confidence in those numbers. (This gets dangerously close to assigning probabilities to probabilities, which would get one immediately excommunicated from the Statistical Church; but maybe you see what I mean.) Sometimes, a future experiment (like tomorrow's raining or not raining) can be viewed as "equivalent" to a series of past experiments, and then one can use their observed outcome frequencies as probabilities for that future experiment. Sometimes the possible outcomes of the experiment (like, a throw of a die) are physically equivalent, so it is reasonable to assume that they have equal probabilities. But how could I rationally assign probabilities to future events like "the SEC will approve COIN trading on NASDAQ", or "investors will not notice that the fund's value is defined in the Chinese exchanges"?
Moreover, I am not convinced that the opening of a fund will increase the demand for bitcoins on the market. The COIN fund, for example, will probably buy bitcoins from the Winklevoss twins at first. (That, I presume, is the reason why they want to create the fund.) If that is their plan, then, while their BTC reserves last, the fund will not generate any new demand for BTC in the exchanges, but on the other hand will swallow some of the money that could have gone into buying BTC there. In that case, the opening of the fund may depress the price at first. (SMBIT opened in September 2013, was there a price jump because of that? What about PBP?)
And, if that is their plan, why do the Winklevosses want to sell their coins to the fund, instead of holding them? Have they lost faith on the moon?
EDIT: typo "die"