To do that it would have to do something, anything, even one tiny little bit better than something in finance.
So far it's like quantum computing. Nothing is better solved with a quantum computer right now. Will that change in the future? Maybe. Until it does they simply won't be used. After all, why would they - except as an opportunity to build in-house expertise in a new space, and for the perception of being hip?
There is no preordained future where it's accepted, it has to earn its spot.