The larger marketplace might sort this out by itself.

Most Tradfi has no fucking clue what a UTXO is. As adoption grows and ETFs look to distinguish themselves (given that the ETF game is winner take most) IBIT has the distinction of being the biggest, but FBTC has their keys and can build out and run homegrown proof of reserves.

If it catches on and Coinbase is forced to run their own proof of reserves MSTR would not be exempt from the desire of the market for this product.