Hello Tiger,
It is just the way the consumer market trends go.
If it is pleasure equipment they can have fun with or need to make a living with, they will be more inclined to spend the money to keep them going.
Most of the commercial lawn equipment folks around my area are locked in with "cradle to the grave" dealer service contracts, so the independents like me don't have a chance.
If it is a mower for daily or weekly "chores", regular end-consumers are usually inclined to just throw away or give away the broken-down stuff and go buy new. (They have easy credit card financing) A new mower every 3 to 5 years is not uncommon for many folks. By the time I see a few of them, they are already on the 2nd, 3rd owner or ready for the salvage.
ATVs and UTVs cost serious money these days (even used) so people are less likely to trash them. When they compare the price of a new unit, it makes more sense for the customer to invest in the repairs and upkeep maintenance.
I get some UTVs that are "fully decked out" hunting rigs that are more like a compact many minivans on steroids than a utility work mobile. Some have A/C, heat, winches and a full stereo system with plenty of gun racks and mounts.
On the bad side of the UTV and ATV world are the "barn finds". They are literal. With those, you will find all sorts of rodent nests, chewed wiring harnesses and just nasty conditions. If they are too bad, I turn them away quickly. These are not a bargain for anyone.
With UTV stuff if the engine and tranny are still good, I will take the repairs and payments in "stages" for most customers and I never take in "emergency jobs". It is steady work.
If you do get into the ATV/ UTV stuff, invest in an ultrasonic cleaner and a 2-injector cleaning machine. Stay away from the aftermarket "junk" injectors and be careful of the in-fuel pump brands you choose. Genuine OE parts are expensive, but sometimes the only solution.