The Sultan’a term is up in two years. I cannot imagine him just leaving office because the rent is up. In the next two years something really strange and big must occur. Perhaps it will be to perpetuate him in office- make it a real Sultanate, or perhaps it will be to formally and powerfully substitute Shariah for the Constitution or dissolve the military or something else. It will be a big deal, of that I am sure.
All these tax payer funded fundraisers are for a big bang exit the likes of which will shock us all IMHO.