Creates absolutely nothing and he's stuck in the past as the top dog. House is the epitome of apathy. Completely uncaring of what happens so long as he has his. If all of New Vegas was surrounded by muties house wouldn't give a shit so long as they stayed in freeside.
As well creates nothing and subsides on pillaging to survive. Legion doesn't purify their own water, grow their own food or do anything other than be high level raiders. They wear dinner plates for armor when they're not wearing football pads and wouldn't last the year if they actually cap the Mojave because they'd destroy everything.
At least the NCR provides protection, shelter, food, clean water and is building something that's for someone other than themselves.
Pay your taxes savage it puts seed in the ground.