Pre-tech, the winner take all dynamic was prevented by physics:
- Customers were only willing to walk so far to go to a bakery
- A store could only stock so many varieties on it's shelves
Now, the cost of distributing goods across the globe, and the incremental cost of creating new goods has shrunk to virtually zero for digital goods, combined with people's general hesitance to the friction of switching providers, creates a the natural "winner take all" effect
The places where you'll see this NOT happening are areas where those costs are still significant for some reason.
Examples:
- Different ride sharing services are popular in different countries, many of them local ones, since foreign companies had a harder time getting distribution started.
- Legal regulations also have been hindering the spread of payment companies across country-level borders