Vegas and the Vegas traveler have changed dramatically since my first trip in 1984. Many folks NOW expect to stay at hyper-luxury multi-billion dollar resorts. Many of these folks call Harrah's Casino, for example, a "rat hole". By 1984 standards, today's Harrah's would have been an 8 on a scale of 1-10, yet today it's a 3.
If you expect to stay and play at a resort that cost $4 billion to construct, expect to pay a bunch of money. It doesn't really matter if this "bunch of money" is paid in one sum, or the amount is subdivided into room, resort, and parking fees. Either way, they are going to charge you what they believe the market bill bear.
The anger that some display baffles me.