Please keep in mind you'll hear/read about more failures than success stories because those that have had failures will bitch/moan more often and more loudly than those that have had no trouble, so your small sample size might be skewed.
195 hours, 202 hours, 140, all running on original engine, that's all I've had in my actual garage.
those that I know/ride with at least 3 are over 200 but most under 100. I'm discounting failures of heavily modded ski's but I'm only aware of two that crapped out under 200 out of maybe 15. Not sure if I consider that a success or not.
I have a big fear of catastrophic failure since the "fix" starts with a 3,000+invoice. <not something I want to deal with.
If you plan on holding onto a ski past 200 hours I think other things past battery/oil/plugs/SC that should be addressed as preventative medicine.
Carbon Seal
pump
intercooler
other likely problems, steering/reverse cables/throttle body/PTO bearing/injectors/motor mounts. Any or all of them can be an issue based on prior use, prior maintenance, salt water, storage, and bad luck. Ignore or over look a bad motor mount and a $25 fix can turn into $800+ <ask me how I know this
Ride it normal, flush, change oil, store indoors and it will last a dam long time.
Ride it like a race car with old gas, skip flushing, use cheap oil, store outside and its a time bomb.