If history is any indicator, how many of the FANG companies will still be tech giants in 10-15 years?
All of them. The best predictor of how long a company will be around is how long it’s been around. All of these companies are at least 20 years old, so we should expect them to last another 20.
Also, in the last 15 years, it’s been rare for a tech giant to fall even out of the top tier. Today’s top tier is FAANG plus Microsoft and maybe Salesforce. In 2005 it was exactly the same list! So barring the invention of a radically new technology, we should expect to see the same companies remain dominant over the next 10–15 years.