I think his comment is spot on. Many problems have a naturally limited number of users/objects. You can scale up. Scaling up is seen as sacrilege, but scaling-o

I think his comment is spot on. Many problems have a naturally limited number of users/objects. You can scale up. Scaling up is seen as sacrilege, but scaling-out is expensive in human labor. Scaling up is inexpensive in human labor, and often inexpensive in hardware, and sufficient for many problems.