Instead of family ranches we will have subdivisions. First of all, very small amounts of private land are attached to very large public land allotments, and the public land can't be developed, just the private. On the Diamond Bar Allotment, about a hundred acres of private land is all that could be developed. They're two independent things. Also, third, ranchers are already subsidizing when they can, anyway.
Most wildlife can get through and over fences.
But that brings up another point. The Forest Service wants to divert water to make waterholes in the uplands they say will benefit the wildlife, but, in actuality, the wildlife don't need these expensive developments. They're incredibly mobile, and they can go long periods and distances without any water. They don't need to have these artificial waterholes which only promote further scouring of fragile watershed during seasonal flushes of water. Building water tanks allows heavier concentrations of animals in more fragile areas.