It's not in the interests of the UAE to improve. There's the (possibly misattributed? but topical nonetheless) quote by the previous emir of Dubai:
> My grandfather rode a camel, my father rode a camel, I drive a Mercedes, my son drives a Land Rover, his son will drive a Land Rover, but his son will ride a camel.
They want to prolong the Land Rover phase as long as possible.
So in other words; Mercedes-Benz was the peak, and he was estimating a decline trajectory slower than the rise.
For what it's worth, the quote is half and half. The full context is that he went on to say he wanted to avoid the second camel.
https://www.aap.com.au/factcheck/dubai-sheikhs-words-lost-in...