[cafard]

Some do go broke. We rely on New York Replacement Parts for cartridges for our bathroom faucets, the original manufacturer being long out of business. Double-glazed windows may get blurry over the years, I guess, and then one would replace those. But that should take ten or more years.

A properly protected door should last many years. One that we bought was not up to outside use, and failed. That manufacturer ended up purchased by a competitor, I think.