That's probably not that common. Much of their membership attrition likely comes from the inverse of that: people passing away and as their estate is wound down their account will be shut down.

What's fascinating is that Verizon purchased AOL for $4.4B this year. With AOL's publishing business only raking in ~$10mm per year, I'm really curious how they valued the dialup business. Did they just straightline membership attrition percentage and assume it'll decrease steadily? Or did they do an in-depth analysis of members ages and life expectancy and assumed lifetime membership to calculate a more granular remaining CLV? Now that's a morbid thought...