Why are hotels so cheap in the UAE?

I was booking a hotel in Abu Dhabi for work when I noticed that the price I was paying wasn't for the single night but for the whole staying. I'm basically booking a 5+ stars hotel for 4 nights for the price I'd pay for a 3 stars hotel in NYC for a night. What's the reason behind this? It seems unreasonable since it's a country with very luxury-targeted tourism. (I've never actually been, this is my first time in the Emirates)