There are some individual traders who have ventured into crypto trading.
Companies are usually more cautious - the risk/ volatility associated with crypto is very high.
I personally know some ex-stock traders who adventured into crypto and now they are thinking about leaving
"traditional" trading for crypto. The reason that caught their attention was the higher profit over the same long period and the excitement of crypto's
"wildness". But they are individuals and have stable jobs next to trading. I guess, it is different than building a company on the same thing.