Two things drive maintenance needs in this area: age of the housing stock and the climate. Most of Costa Mesa's garage doors were installed during the 1960s and 70s construction wave that built out this side of the county - hardware from that era wasn't designed to be maintenance-free, it was designed to be serviced every couple of years, and a lot of it never has been.
Costa Mesa sits in a mild temperate climate band, so the wear you see on doors here comes from daily temperature swings and salt-tinged air, not the freeze-thaw cycles that wreck springs in colder states. That means components fail from slow dry-out and corrosion rather than sudden cracking - a spring or cable here usually gives you warning noise for weeks before it lets go, if anyone's listening for it.
Across the wider Costa Mesa service area there are 157,164 owner-occupied houses among 395,886 households, and a large share of those garage doors were installed during the same construction wave, which means the same maintenance gaps show up house after house on a given block. With a median household income of $113,204 in the area, most owners can afford to keep up with a yearly check rather than wait for a spring to snap on a Saturday morning - it's usually a matter of nobody having flagged it yet.