You typically have it configured with a cap on instances for cost reasons. Even if you don't, if you have other services (like a database) downstream, you migh

You typically have it configured with a cap on instances for cost reasons. Even if you don't, if you have other services (like a database) downstream, you might not want it to scale infinitely as then you're simply DoS'ing the DB instead of the Cloud Run service. Backpressure is really important for the resiliency of any distributed system, IMO.