If low phosphorus foods are good for CRF cats, shouldn't we feed low phosphorus foods to healthy cat

So, one of my 5 cats was diagnosed with CRF.  As a volunteer at a local shelter I'm very familiar with CRF and it's treatments.  I've got a list of all the lowest phosphorus canned foods and have switched the CRF kitty to very low phosphorus foods.

My cats all ate Natural Balance canned for the last 5 years, which just happens to be one of the highest phosphorus foods out there. It just gets me to thinking that if 30% of all cats succumb to this horrible disease, couldnt we slow it down or prevent it by feeding lower phosphorus foods to begin with?  I've been trying to start a canned food rotation instead of just pure Natural Balance and I'm having a beast of a time finding a lower phosphorus food all 5 cats will eat.

Anyone with CRF cats thought about this before?  I only feed ultra premium with the best ingredients canned and a very small amount of Pinnacle Cat dry as a snack to the healthy kitties.  The CRF kitty gets whatever he will eat, usually one of the low phosphorus Fancy Feast varieties. 

There are benefits to everything. And what's good for someone with a health problem isn't necessarily good for someone who's healthy. For instance, some people need a super-low-sodium diet. But it's not healthy for someone without those health problems to severely restrict sodium intake. Likewise, phosphorus has health benefits (http://www.organicfacts.net/health-benefits/minerals/health-benefits-of-phosphorus.html), unless your kidneys aren't working right. Feeding a low-phosphorus diet wouldn't prevent kidney problems.