Is Indonesia even a big enough market for Apple to need to worry about losing it?
Looks like Asia Pacific in general is a very small portion of Apple's revenue. https://www.statista.com/statistics/382175/quarterly-revenue...
On a side note, iPhone's seem to last quite a while. I still have a Xr and it runs the latest iOS quite well, so people might be good for a while if they stick with the 15.