> A $10k furnace every 25 years adds something like $40 a month and that’s only one of the many wear items there are.

Right, but remember that if you are a renter, the landlord is passing those $40 to you bundled in the rent (along with all other future maintenance projections). There's no free ride, the renter is paying for all of it plus profit margin to the landlord.

You can sometimes get lucky as a renter by finding a small-time incompetent landlord who doesn't price these future maintanence costs into the rent, but that's not the norm.