Unfortunately I don't think there IS much risk, and they realize that. They feel the hardcore fans will never leave, so might as well attract the fair-weather fans, wives, GFs, gamblers, and people with 15 second attention spans with things like an expanded tournament, legalized travelling, shortened shot clocks, making it tougher & tougher to defend because OBVIOUSLY a game with more points scored is a better game, etc.
I'd absolutely hate going to quarters. HS ball now plays halves (at least in Wisconsin) after playing quarters for many years so maybe it can be headed off. And yeah, there was no sensible reason to go to a 30-second clock. Teams that wanted to play fast had nothing stopping them. But teams that wanted to play a different tempo were being squeezed as we went from no shot clock, to 45, 35, and now this. I love that so many games are being televised nowadays, but that saturation is a large part of the problem. IMO it's beautiful to watch the intricasies of play on both ends from a team coached by someone like Pete Carrill, Dick Harter, the Bennetts, Don Chaney, etc. But if it isn't must-see TV, screw you, we'll rule-change your style out of vogue. And that's sad.
Pardon me, there's kids on my lawn, gotta go.