I do not know that KYC is profitable for crypto, which is clear KYC only verifies our data for withdrawals from websites and I think KYC is not important and this is just a trend so KYC is used everywhere.
I dont how KYC makes profit for investors. Dont misunderstand the reason for KYC, you can do a little search on it, it will help you. The idea of KYC is to have personal details of individuals submitted to prevent laundering, bank's involvement in any form.