One thing that isn't captured nowadays is that a lot of what "couldn't scale" before - i.e manual work, the type of which you described - is now much more scalable due to how much easier it is to automate tasks at scale.
It's suddenly feasible to build businesses that require at-scale manual operations, because you can do so in a predictable, revenue-positive way.
It's suddenly feasible to build businesses that require at-scale manual operations, because you can do so in a predictable, revenue-positive way.