We will not come back to fiat gambling, but gambling with alts can be next logical step. Fees are really high, I don't like to gamble with some big amounts, so when I wish to send 50-100 dollars that cost me almost half of that amount just to send that money. I'm thinking about changing my gambling habits, but before final decision I will give bitcoin more time to make this better. I'm familiar with some sites and I wouldn't like to change them for now reason, but this fees are really pain in the ass for many of us.
This is a sad reality and that is what is giving altcoins some subsidy and leverage over Bitcoin. It is not the users' fault but more the fault of the wallet services like Blockchain.info, and other services that refuse to implement Segwit. Also do not forget some of those services were the signatories of the NYA, the same people who were demanding that something should be done to lower the fees and increase the block size.
But why are they NOT using Segwit?
Well I am agree with you, the main business players in the bitcoin network should take some bold steps and work accordingly in order to implement the segwit. Just like others i am also getting frustrated whenever the transactions are unconfirmed and got delayed even after paying high transaction fees.