People need Microsoft Windows to operate their businesses and do their jobs, Apple phones and Netflix subscriptions are much easier to replace.
- Facebook: Rolodex
- Apple: Simple, low-hassle, powerful tech
- Amazon: Supply chain, low prices, long-tail product discovery, stellar shopping experience supported by an tremendous economies of scale, compute, internet infrastructure
- Google: Search, email, maps, productivity software, compute, internet infrastructure
For as long as these companies remain dominant in these categories continue to provide value to customers, they will not be replaced. They continue to grow exponentially in major part because of the very real value they provide and the lack of viable competition from outside of these groups.
Hence Facebook's goal to move into fundamental infrastructure with both this company town plan and internet.org
Same with Google Fiber etc...
The ultimate goal for a tech company is to provide what utilities and public infrastructure cannot.