Bitcoin markets will recover soon and the price  of bitcoins will start to rise before 2020, there are more possibility for a huge leap in the crypto market like in 2017 o even more than that and the price of bitcoins could even cross $50000 USD which will make many new investors and merchants to enter the crypto currency market, so there is nothing to worry about the merchants not entering the crypto currency market even though it has been 10 years since bitcoins came into being it is still in its infancy stage and so time will take for more wider acceptance.