Bitcoin and business were seems similar. As the bitcoin uses in investment you're gaining a profit and also having involvement of bitcoin in business world. It serves as digital coin and used to pay some transactions.
Bitcoin and business are not similar, they are far from each other. Digital currencies the same as Bitcoin are just a currencies that is decentralized and volatile. Bitcoin is not a business, since when you say similar, they are the same but they are not.
Bitcoin and business can be related to each other since there are a lot of exchange, that is Business, that accepts Bitcoin. Without Bitcoin and other crypto currencies, there will be no business on exchanges.