With so many good altcoins around, do you think Bitcoin can cross $50k by Dec 2020?
Lol, where are those many good altcoins that you are talking about

. Most of them have tanked real hard mate and let's be realisitc for once guys. How on earth do you want to see Bitcoin rise all the way up to $50k by ending of next year. This is highly impossible looking at the situation of crypto industry and with most countries trying to prevent its adoption.