GBTC IS NOT the only game in town, it is just the most expensive by far.  That was the whole point of this post: https://bitcointalk.org/index.php?topic=337486.msg28835640#msg28835640  As I write this, GBTC's premium to underlying bitcoin value is 74%, thanks to the split enabling a new cohort of buyers in the last couple days.  As word spreads that there are near-zero-premium alternatives available, that premium is going to come down.