Last week’s Global Gaming Expo (G2E) crystallized what anyone paying even mild attention to the gambling industry has been well aware of for quite a few months: The next big fight will be over “sweepstakes” gaming.

Sweepstakes casinos, or, as the companies themselves put it, social casinos with an additional sweepstakes layer, took over G2E. (For brevity’s sake, I’ll use “sweepstakes casinos” — a term I’m not opposed to — from here on out.)