Thompson's Station's housing is newer than most of the towns we cover out of Columbia - the area median year built is 2013, well past the broader 1986 median across the six named areas we serve. That matters for cables specifically: these aren't stretched, rusted originals from a 1960s build, they're factory cable stock that's simply put in enough cycles to fray, usually at the point where it wraps the drum or loops the bottom bracket.
The other number worth noting is income - median household income here runs about $122,139, well above the roughly $70,163 median across the wider service area. In practice that means more Thompson's Station calls end in a decision to replace both cables and inspect the spring and rollers at the same time rather than patch the one broken cable and wait for the other to go. It's a reasonable call on a door that's otherwise in good shape structurally - new enough track, no rust, no warped panel - just original hardware reaching the end of its cycle count.