People will gamble with whatever has value, whether it is crypto, fiat money, a house or an NFT. I think that NFT will cause an increase increase in gambling, as it makes the gambling process easier and enables a player to bet with something that was not previously possible. Anything that reduces the time of betting and has some kind of value will be adopted by gambling. Lets take an example: A plyer plays with his crypto currency and loses it all. He has some baseball cards as NFTs in an Eth wallet. In the past it would have been difficult to use that as a bet, but since it is tokenized in this case, it would enable betting as it is something that can be proven since he owns the private key and can there and then transfer the NFT to the betting pool. Lets say furthermore that one day we will be able to tokenize all our assets and a physical house ownership is proved by private key ownership of an NFTs address, then it would be easy to gamble with the house and transfer it to a pool.