Right, but the police sure could make that area a pain to be in. The hotels surrounding the area can complain to the city (constantly) that the area needs to be improved and is "unsafe" and any number of things. Disney could do the same. While Disney might not be able to pay people to move the homeless off the streets, they certainly could influence the city to do something about it. While the city can't arrest them, they could hassle them anytime they were near Disney. I'm not saying those are the RIGHT solutions, I'm just saying I'm surprised they haven't been done.
I haven't been to vegas in awhile, but honestly I don't recall seeing any homeless on the actual strip, and I would have thought that would be a fairly prime spot for them to pass through and hang around. There are ways cities have to keep "high value" areas less affected.
I'm all for cities and states working to solve the initial reasons that cause it in the first place and for finding positive ways to bring people off the streets and back into supportive situations, but still, a little surprised something isn't being done...