I feel like even in Geico's case, once they've paid salaries for everyone who's going to need to maintain this infra they're bringing in-house they're probably

I feel like even in Geico's case, once they've paid salaries for everyone who's going to need to maintain this infra they're bringing in-house they're probably not saving that much. Then again, maybe they were already paying those salaries redundantly to all the services they were spending on, e.g. managed databases.