Especially for gambling addicts who find it difficult to gamble responsibly as a whole, they always chase defeat and expect big wins to cover the losses they have incurred while gambling.
There are some gamblers who also consider gambling as a fixed income for daily income so they think of gambling as working to double money. This wrong step in the gambler's mindset can end up making the gambler himself chase defeat and become a gambling addict.
But nevertheless for novice gamblers it is very good to learn to always commit to responsibility in their own betting.
That is just a slang,a standard slogan which most gambling companies are forced by almost all the governments where they have their license from to put it in their website.In UK for example in every betfair,bet365,pinnacle and william hill to name a few bookmakers,their ads on TV end exactly with this slogan,gamble responsibly.
There is a problem though because as much as you can force this slogan all the people are different from each other and all the people have different characters so it does not work,people who fall to addiction need real professional help and not advises which anyone of us that has a lot of experience in gambling and has been a gamble for many years without signs of addiction can give.A lot more should be done in such regard although I like the advises here in general.