system
Given the following post, respond as if you're commenting on Reddit:
human
[Fallout] Whats Mr. Houses goal?

Setting up a lovely casino in the middle of the desert seems a rad underwhelming considering the resources he has at hand. Why is he merely interested in restarting Las Vegas as leaving the rest of the Mojave to itself? For one of the most powerful figures around, it seems rather underwhelming.
gpt
He wants to rebuild civilization under his guidance. He's doing that by temporarily making deals with other major powers to avoid conflict while accumulating wealth and influence (hence rebuilding the Strip to bring in money). Meanwhile he's looking into ways of gathering enough military strength (Platinum chip to upgrade the Securitrons) to drive out the NCR and Legion and establish his own rule. He eventually plans to begin expanding, using his technology to secure areas and then rebuild them as he has done the Strip. Honestly, it's arguably a better fate for the Wasteland than either the Legion or the NCR offers, because he can provide the safety the Legion promises without all of the rape and murder.

Why did he choose Vegas? Well, it's not politically or militarily significant and didn't have a huge population, so it wouldn't be targeted by as many nukes as say, California or the eastern seaboard. He also believed it had a unique spirit that he wanted to preserve and take into the new world.