Yes, there's definitely a positive side of gambling as well. Our country has been in a gambling war ever since and I don't know if they are very successful. But on the last 20 years or so, it somewhat legalizes some gambling and we even have a lot of casinos right now bringing jobs to us.
That is called employment and that is associated with every company that needs to deal with people. Gambling industry is porfitable for the owners and the employees but not for the player though.
I have talked to some of the dealers and they attest that working in a casino has a lot of perks besides their monthly pay, they can earn thru tips or even have night differential payments (obviously) that most of them as young as mid 20's have there own car already which is not the norm here.
If they like their job then they should be enjoying it as well. That does not mean everyone would like this as a job. Imagine going to a social meeting and people ask you about your job and then you say "I work at a casino"
My take here is that its not the casino's problem is somewhat get's addicted, its still up to the person on how he/she will manage and the responsibility to not immersed themselves in too much gambling.
Most people cant control their emotions and tend to addicted.