As DistortAMG said, the cables need replacing reasonably often. Cables on this kind of ride generally do. The same thing happens with the launch cable on Intamin’s rocket coasters. On Rita the cable needs replacing every so many launches. I’m not sure what the rules are on the drop towers.
In 2007 the cable snapped on an Intamin tower ride at Kentucky Kingdom.
https://www.insurancejournal.com/news/southeast/2008/04/15/89148.htm
I remember reading somewhere that the cable hadn’t been replaced when they should have done, but the article I’ve just linked to lists the kind of lubrication used and insufficient inspection procedures as a possible cause. Maybe the thing I read about the cables being replaced wasn’t true. At the time Six Flags were having major financial problems and heading towards bankruptcy. There was a lot of cost cutting, and perhaps someone jumped to conclusions. Either way, everyone maintaining one of these rides would have the Kentucky Kingdom accident at the back of their minds. You wouldn’t want to use the same cable too many times.
I can imagine that Apocalypse isn’t a cheap ride to maintain and operate. However, it says something when Fraispertuis City can afford one and Drayton Manor can’t.