I wonder what the monetary difference is between building up Vegas and building their own campus. If you accept the fact that you need a decent campus to attract top talent then your investment only needs to make up the difference between the cost of building your own. Throw in the fact that it's more attractive to have your campus downtown than out in the sticks of Henderson and you're really not looking at needing to make up a ton of money. Even if you end up losing a little bit of money you could very well come out ahead.
Take this as someone who had a company move to Vegas and more than half (including myself) the company left because of it. There is a certain type of people that can stand the culture and atmosphere that is Vegas, and intelligent tech people usually aren't that type.