> If anything, centralisation shields companies using a hyperscaler from criticism. You’ll see downtime no matter where you host. If you self host and go down for a few hours, customers blame you.

Not just customers. Your management take the same view. Using hyperscalers is great CYA. The same for any replacement of internally provided services with external ones from big names.

Exactly. No one got fired for using AWS. Advocating for self-hosting or a smaller provider means you get blamed when the inevitable downtime comes around.