The value of this kind of sponsorship is not as much about becoming know to the target audience but creating the environment to grow the number of audience.
Most "crypto" products aren't even crypto but custody accounts. But that doesn't change the fact that blockchains that can be controlled by specific entities unanimously are a joke of a crypto.
At a traditional bank you have your national deposit insurance scheme; you get that in return for converting your "assets" to the said nations issued currency but accept the authorities control of the money supply and your funds.
With decentralised money, you get the safety of a globally distributed attestation backed by cryptography without a single authority controlling the supply of money or your funds.
There is no halfway option. You either have a single authority that can exercise control or you do not; number of delegates for exercise of control is almost irrelevant since you can change banks.
The existence of a category of warrants that allows operation that is indistinguishable from warrantless searches creates a kind of legal hazard and personal risk that is hard to overlook. Police lie on the regular.