For now, rather small businesses. Big companies will not use cryptocurrencies as the mean of payment because of the volatility. Imagine a shipyard - in this business, you make orders and sign contracts with years of advance. Simply impossible to be used as of now, if volatility exceeds 1% on a daily basis. And here, with BCH we had since 2018 bottom increase in price by 350%.
Perfect investment, poor mean of payment as of now.