The fundamental way that small businesses can use blockchain technology is by accepting cryptocurrency as a form of customer payment. Blockchain can help bring products and transactional services to market quickly and inexpensively, and get rid of the traditionally high costs of security, data storage and other overheads. It can speed up the exchange of property, manage the overall execution of business contracts, streamline overall contractual enforcement, track and verify identities, and many more.
So if this small businesses get to understand this they will thrive faster
Blockchain and cryptocurrencies should be targeted at those industries where the benefit is the most apparent and clear (e.g. identity).
It is also about how much pressure that the customers exert on the businesses to accept cryptocurrencies as a form of payment. If lots of customers demand or request it, then many businesses will offer such services.