The government doesn't always initiate a KYC. Casinos can also require this if they notice suspicious activity or if you win a large sum, suggesting you might be asked to do so in that case.
You should know that the government are always interested in KYC, the government wants to monitor all their citizens financial assets, they want to be in control of all their citizens assets, and without KYC, they won’t be able to achieve that. I will disagree with anyone that says the government doesn’t initiate the kyc.
I know some casino will request for kyc when you want to make a huge withdrawal, that’s the gambling site policy, but even the kyc which they are always requesting for is being reserved for the government.
There are quite a few casinos that always require a KYC upon withdrawal, and the government has nothing to do with it. So, I'd recommend depositing a small amount first and simply checking the regulations at the casino you want to play at to determine how to proceed and whether it's worth making a larger deposit.
If you want to make use of a gambling site, and you notice that they do request for kyc, it’s just better you complete your KYC before you even start making use of the gambling site, so that whenever you want to make withdrawal, you won’t have any issues with them.