batterytypehah!
Lord of the Dings
Last time I checked the local Kodak one hour at 'The Gap' not far from where I live was still developing C41. The guy who owns and runs the place used to work for Olympus back in the days of the OM-1s and 2s and although they are lucky to get a couple of rolls a day he keeps the machine operating. He did tell me though that when it becomes unservicable that's it ... no more film!
Currently they don't turn the machine on until midday to conserve it's use as much as possible.
That's a familiar tune. Don't know about Oz but here in the US, what's still keeping minilabs going is single-use cameras. There's still a market for those. Every convenience store or gas station still seems to sell them, long after rolls of 135 have disappeared from their shelves.