When playing the game, it is pretty obvious that NONE of the other factions have any chance of long term sustainability. House is the only one with the knowledge and technological advancements to get humanity closest to its Pre-War state.
Heck, just looking at the difference between the Mojave Outpost or any other NCR establishment, and the Strip, it is painstakingly obvious which one is the way forward. The Strip being a place of security, and financial growth is shown to be managed so much better than whatever the NCR has been able to do with their lack of funding/trained soldiers/whatever other problems they have.
A lot of people have been criticizing House for not caring about anything outside the Mojave, but tbh it's a lot better than any other faction would be able to do. Also, House is not an idiot, he knows the importance of actual people with their spending of caps on the strip and will no doubt make further improvements to the quality of life in the areas surrounding the strip.
Any thoughts?