This also goes hand-in-hand with an argument around core competencies. I’ll stick my neck out here and say that, for most, running a timeseries database for telemetry is outside of your core competency. Running a CI system is outside your core competency. Arguably running your data store is outside of your core competency.
Probably everyone have seen this post already, but still think its worth re-posting yet again; I did go back to it last week, just after one of the colleagues I work was eager to use DRBD in AWS as a solution to have files on two instances in sync (small lag acceptable…)