First of all, my post was not based on what I believe to be reality. I was mainly expressing my concern over the long term effects of our society's ongoing proliferation of ways to profit from humanity's inherent weaknesses. That said, you may be right, but I'll take a shot at explaining myself.

Why do you suppose you are inundated, everywhere you go and even at home, with advertisements for products and services? I believe it's because businesses figured out a long time ago that marketing is an investment that generally pays off. I'm no MBA, but I understand one of the principles of marketing to be that increased availability of a product in the marketplace will increase sales of that product. The power of the "impulse buy" is a significant driver in the way things are marketed. Just look at what you see around you while you wait in line to check out at the grocery store: a bunch of stuff that you pass by in the aisles while gathering the items on your shopping list (assuming you were frugal enough to make a shopping list, without which you would likely make many more impulse buys) but are likely to appeal to our tendency to indulge ourselves with treats. It's right there in front of you, so unless you don't like it or consciously decide to avoid it, you are likely to throw it on the checkstand. The same should apply to gambling. As docspud pointed out, the convenience of having more locations where gambling is available will convince more people that they ought to go ahead and give it a try. It's a lot like trying recreational drugs. Most of those people will not gamble any more than they play the lottery, for example, but by the numbers, some will become habitual gamblers, more of which are not conducive to a productive, responsible society.

There is also a certain component of the non-tribal population that outright refuses to set foot in a tribal casino yet travels to Reno or Las Vegas on a regular basis to get a gambling fix. With non-tribal options available locally, many of those folks would seem likely to fall prey to the gambling bug with dangerous frequency as well.

Right or wrong, I think widespread gambling, while it has great potential to produce revenues, would prove detrimental to society in the long run.