Remember, this whole thing about crypto is largely decentralized, thus, there is no single authoritative body in control of the crypto market. Although there are few centralized platforms among crypto, the market is largely influenced by the efforts and influence of the users of crypto. How well sellers and buyers treat the coins on the market affect the performance of the market.
I would not talk about the decentralization of cryptocurrencies. Even bitcoin has only a few wallets(people) concentrating more than 50% of the market.The same situation is even worse for other cryptocurrencies. About tokens that appeared in the last 2 years, I do not say anything, there one or two people can own 80-90% of the market.