Well here's one for preventive maintenance i ride a full suspension mountain bike and i ride it hard. It goes in 2x year for inspection and maintenance. This trip shop discovered a crack in the rear swingarm turns out this is a known problem and dealers were supplied tools to find the cracks before they were visible to naked eye. Dealer is replacing part bike is 10 years old but regular PREVENTATIVE maintenance keeps it safe and yes it costs MONEY for those inspections. But i would have not found the failure if i did not practice what i preach
A lot of it is just keeping things in good working order. I saw this with my daughter, years back. She bought a car and something went wrong with it and rather than fix it she let it go. Then something else went wrong. Then another thing. You get the idea. Eventually the car wouldn't run and, because there was
so much wrong with it it wasn't worth fixing. She got a bunch of relatives to bail her out (I stayed out of it - keep up with your stuff was my thought) and they spent more fixing everything than the car was worth, which made no sense.
It's an interesting situation, though. My car is paid off and when things break I just fix them. I don't let it go. I don't want to be in that situation where I'm thinking, "Huh.. there are 10 things wrong with it and to fix them all would cost more than it's worth.. May as well buy another car.." At the same time, by doing this, the car ends up being worth more to me than anyone else. It's nearly free transportation (I have to fix things, maintenance, etc. - cheaper than a car payment, though). If someone were to run into me and total my car what I would get for my car would be less than what it's worth to me (they'd look at the mileage, model, make, year, and quote me some price and give me that money and I'd have a hard time finding such a well-maintained car for the price).
So, it sort of works both ways. You could argue that it makes no sense to keep my car in good working order because, if I flipped it tomorrow, I'd be back and nearly square one.
However, it provides reliable transportation and that wreck hopefully won't happen. In addition, I enjoy the car. The A/C is great (replaced parts of it last year), it runs well, no leaks. It's a great car (coming up on 9 years).
My daughter's car, though, was a piece of junk because she didn't take care of it. You didn't need a wreck to total it as she did that all on her own (the cost to fix it was more than the value of the car).
As such, you can see how this would play into theme park rides or other equipment. If you try to cut corners on something and do it long enough eventually you get to the point where it's
really hard to justify fixing it vs a well-maintained whatever just needing a tweak or a new part from time to time (you've already absorbed the on-going maintenance costs so fixing an odd thing isn't a big deal).