Airbnb will build a new tech hub in Atlanta

I don't pretend to be an expert, but what 'tech' is there to AirBNB exactly? A SQL database setup and UI CRUD layers for every popular platform?

Why does this company even need a hub? It could use some extra lobbying power I'm sure, given that it's entire business model is dependent upon them remaining a de-facto monopoly.

Literally every post about one of these companies has a comment like this. The issue for companies like AirBNB is not that their application is necessarily bafflingly complex (though it is absolutely true that, especially during the nosql era, amazingly baroque and bizarre architectures had a heyday) but that operating reliably at scale is hard, requires good decisionmaking on multiple dimensions, and requires attention to things that "just CRUD app" doesn't capture because none of them actually matter at low scale.

The same could be said about flowers.com, macys.com, or literally any company doing business on the internet. Scale is basically a solved problem so pretending that AirBnb is a "Tech Company" or that they have any interesting tech is incredibly naive.