The current valuation is crazy and time will tell for a project that has nothing in production currently. The space is still open for some of these Ethereum competitors to take the top spot form Ethereum before the launch of the Ethereum 2.0 and if some of these new projects fail to come up with a solution to the scaling solution than bye-bye. I still feel the project is over valued at $4 billion Mcap
I just went to coinmarketcap, BNB is still in the top 10 and no change has occurred. Looks like you checked it out at coingecko? Btw Polkadot is a big project and I believe it will rapidly grow strongly in the future, and the top 10 altcoins in 2021 will have this project name.
Coingecko displays Polkadot NEW at top 6th with a price of more than $5. This is a good project otherwise its not going to have a huge marketcap. Its unsure though why CMC isn't listing this project so far but if the project gets a lot of daily volume of $590,732,669, its not going to be good for inferior platform tokens like ADA. Damn, holding it seem a mistake for not seeing the coming of polkadot.