Financial business logic is not a great use case, approximately no one uses it for that. Almost all of the interest in BTC/ETH is driven by speculation and greed, which is a shame as it's a whole new computing paradigm.
Entrepreneur: 'Hey, look if we boil water it moves this piston'
Investors: 'We speculate that this may be important in the future, here's money'
Entrepreneurs: 'I made a steam engine'
Investors: 'We speculate that this may be important in the future, here's money'
Entrepreneurs: 'I made a railway system'
Investors: 'We speculate that this may be important in the future, here's money'