For anyone investing in bitcoin, or even just following it, 2020 has been a thrilling year. As recently as December, the price of bitcoin, the world's most valuable virtual currency, hit an all-time high of more than $24,000. Bitcoin could be more mainstream accepted in 2021, market analyst James Ledbetter predicted on Dec. 22, but it could remain volatile in the face of competition from big tech companies and digital currencies from central banks, as well as tougher regulation from the ...