It's a slow process, for exactly the reasons you describe- in fact, I've quoted that exact same line of reasoning many times myself.
The reason to work in this area regardless is because there are definitely large opportunities long term.
If you don't mind me being more nosy, are the long-term opportunities in this exact line of business? (i.e. do you think that one day medical records will be routinely stored on a blockchain?) or is it more than developing skills and capability with both blockchain and health tech will be valuable in the future?