Does that mean it's more or less likely that Saudi Arabia or Qatar will be able to buy it in 2036?

I feel like that’d be Istanbul’s to lose (unless Saudi/Qatar pop a bid in)Neither has confirmed they're in the running, but a Doha bid is ALLEGEDLY being encouraged by IOC members.
It doesn't seem like a particularly strong field for 2036 so far:
Nusantara, Indonesia
Istanbul
Santiago, Chile
India, city to be confirmed
How would a summer games in Qatar or Saudi Arabia even work, without moving the dates (as per WC 2022).