From my basic calculations of net inflow in newly created US ETF, it is about 44,911 Bitcoin or roughly 2,994 Bitcoin per day.
*** (New US ETF In - GrayScale ETF Out = Net US Inflow)
Might take a little longer for all the GrayScale Bitcoin to be absorbed, or they could just lower their fees to 0.25% like everyone else and we can all get out of this brace position.
GrayScale is trying to copy the hard cap of 21mil bitcoins, by hard capping their fees.