There is a very useful application for blockchain: Leverage banks desire to stay current and not loose out in the next wave of change in order to sell them platforms which generate far more interesting press releases than a regular database would..

Like no CTO ever got fired for choosing IBM - No digital transformation manager ever got hired without at least mentioning blockchain.

(Edited to add: Note this isn't a bad thing per-say. Ive seen blockchain used as ammo to do push something through thats actually useful, regardless of whether it was the most apt tech choice or not.)