These companies are involved in just about everything.They have their own:- smartphones
- laptops
- wearables
- smart TVs
- payment system
- operating systems
- programming languages
- AI frameworks
- database engine
- personal assistant
- smart speakers
- car infotainment system
- music/movie/book purchase/streaming
- messaging apps
- video calling apps
- browser
- maps
- chips
- emojis
- typefaces
- design language
- AR/VR platform
- self driving cars
- productivity softwareWhat other companies can compete with them? Do they have a chance? How big is the moat?