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Gambling has been there since people started earning money. This was used for fun at that time and later they started using it as a stream for making money. Gambling is common all around the world and people enjoy it, so those governments that have made it legal have done great because in this way they have channelized money for taxes.
the key is about goverment regulation for regulate this industry sector, like you said today gambling is not just as a game for people to spend free time, but for main income, moreover people more trusted in gambling site using blockchain technology.
You can withdraw and deposit funds with blockchain kasino with out givingbout your identity. Unlike in others likencreditcard your name is there and your bank record. That is the advantage why gamblers now are using the technology of crypto.