My company has all of these things on-prem, but with teams of at minimum 5 FTEs backing each one. That's the point here: a small shop cannot necessarily afford

My company has all of these things on-prem, but with teams of at minimum 5 FTEs backing each one. That's the point here: a small shop cannot necessarily afford to fill an oncall roster with Kafka experts or Postgres experts or whatever else is needed.