I have not heard of such operations yet, but I think it's possible.
Almost all the real investors demand for the Bitcoin and few others best recommended cryptocurrencies for they get better profit from the crypto world.
After the announcement of Bitcoin as investment source in the world or you can say after the modernism of currency people started to proceed for Bitcoin and then other crypto coins. This reduced the traditional trade but not too much as almost all the investors have investments in both traditional world and modern world.