As soon as their investors understand bitcoin I think they will see that this service does nothing they could not have done themselves. Why not just buy some bitcoins then buy some T-bonds?
Storing btc securely is a value-add.
That's a good point. They are also insured, I assume. But if you understand the technology then you may consider unshared control of your private keys to be even more secure than trusting a third party. If you don't understand, then farming out security might be a worthwhile investment.
True. Also institutional investors it starts getting more complex , you need multisig, who in the institution
Will hold the keys,etc...maybe better for them to use a financial holdings company.