It look like bitcoin is heading to replace the silver marketcap this year. How quickly bitcoin is moving up, no one can't imagine.
This is achievable with the current bull run we are experiencing, if the bull run continues till the end of this year, then bitcoin might just surpass the marketcap of silver by then the price of bitcoin must have risen to $85k+, also looking at the chart the marketcap of gold is really large it might take bitcoin more than 5years+ to be able to beat that, cause it still needs to gain the trust of other large investors not just the current ones, nevertheless anything is possible.