Fully agree and endorse.

But my point is... those are all web applications too, and they don't have the option of outsourcing everything. Someone has to build a system that does more than just serve static files.

The claim that 'the majority of web applications can run on a single server' is kind of belied by the example of a site where not even the majority of sub-applications that are required to provide the full functionality of the system are running on a single server.