I'm not so sure that's an appropriate heuristic here. The problems they faced were partly a result of scale[1]. Most companies with scaling problems of the same

I'm not so sure that's an appropriate heuristic here. The problems they faced were partly a result of scale[1]. Most companies with scaling problems of the same magnitude as Uber have engineers competent enough to correctly handle the issues they cited as reasons for switching. Honestly, there are hugely people at any number of Postgres consultancies that could have helped them setup logical replication - since they complained about it being difficult to do - which seems like it would have solved many of their issues. I'd like to believe Uber had the resources to do this, if they had cared to. [1] For example, write amplification.