It's nice to have more dining options in GF and it's difficult to see restaurants close. But, as jdub27 suggested, the restaurants that are viable and well patronized, will stay open. Those that aren't, won't. It's the law of the market.
This comment is not aimed at you personally, but at an opinion I've heard a few times about noisy restaurants in GF.
I know I'm stating the obvious, but you don't suppose that a restaurant is noisy before it opens its doors on a typical day do you? It's not the restaurant that's noisy, it's the customers. And what do noisy restaurants have in common? They're busy. And they're busy because they're doing something, or many things, right--good food, good service, good vibe, or maybe people like going there because they're busy.
So, you can go to one of the noisy restaurants--Texas Roadhouse, Blue Moose, Speedway, The Hub, The Frog--and put up with the noise while you're enjoying a good meal, or you can go to a Green Mill before it closes, or a Crooked Pint, before it closes, and have your peaceful meal. Your choice.
Now get off my lawn!