I'm skeptical about 2020, but I agree that we might see it by 2030. The big guys like Amazon and Ebay need to start accepting crypto as payment before they are replaced by sites that do. Using fiat for online shopping is outdated and it's only a matter of time before people catch up.
A lot can happen in 13 years, so you never really know what could be next!
RE: Will price of Bitcoin rise above 50k USD in the next decade?