I think this is more applicable to physical casinos, especially a way to attract tolerance from the government and a way to help charities as well.
Nope mate because how can you take the percent from the chips you are holding?every deal if you lose meaning the banker will need to tally the amount you need to put in donation?this is for online casino i believe.
But in terms of online gambling casinos, mostly those that are anonymous doesn't have the urge to contribute to the society unless the owner does really have a pure heart to do so.
there is no need for them to bring their personal details because online sites will take your donations thru account name and not on your real identity.
On the other hand, regarding us whether we play or not, IMO, I will play knowing that I am not just focused on entertaining my self. If I lose, I know there is a charity that will benefit the same way when I win. I just lessen my worry about wasting money on simple explanations.
that's what we have to do,either gambler or not can contribute by playing and also may have chance to win while helping.