The reason there’s mass urbanization is because, despite the decentralization with the Internet, most of the highest paying jobs are in the middle of the rising city and everyone and thing feed to that single tallest point. Marc Benioff sits on the thrown of San Francisco, King of the Cloud. Bezos in Seattle. From the highest towers they reign over the lands.

Source: https://www.citylab.com/transportation/2018/07/see-your-citys-street-structure-with-these-tools/566138/
We are becoming a global tribe. Connected around these Internet destinations. Hating each other sometimes, but mostly liking the interaction and sharing of our humanity.
Los Angeles has been a really good cultural experience. It’s a dog-pile of ethnicities, tightly huddling between ocean and mountain, trying to make it work together. So you get these explosions of flavors from Korea, Mexico, and Persia all in one hit. And then I learned to cook with the ingredients from the international grocery stores near our place 🙂
As Thomas Friedman puts it, they are the flows of VC, wealth, communication, ideas, cultures.