However, there are other problems that may affect the price in a negative way. The first problem is how exactly the 650K BTC's held by Grayscale will be managed if the premium continues to be negative. Will they apply for an ETF and somehow transfer the BTC's in the ETF market? There is a chance that the things may go wrong for awhile and thus causing some panic in the spot market. The other big problem is that the high expectations may lead to another Dec. 2017 buble like increase that may end just as badly. People thought that the cash settled futures will have a positive impact on the price. Then the great dissapointment came. A similar thing happened when Bakkt started. So there may be some drawbacks after all. Hopefully they will not bring another 2-year bear winter. But once the ETF market becomes fully operational, we can expect at least several trillions $ invested in BTC for a short time of 1-2 years perhaps. And the best scenario is everything to go smoothly with an extended multi year bull market. I think the odds for that are much greater because of the new big players, who don't seek a quick profit.