But then again, where are all the early search engine companies now? Alta Vista, Yahoo, Ask Jeeves, Inktomi, Lycos... Just because you are early in a market doesn't mean you will succeed.
Sure, Sears would have lost some ground to online retail at the start, but with a massive warehouse and distribution network already in place they could have made up the lost ground very very quickly.
It's something I've been trying to develop myself. Any idiot can look back and say, gee, they could've done this, that, and the other thing, with benefit of hindsight.
How do you become the sort of person who sees where things are going, years/decades in advance?
The book can be found on Amazon here: https://www.amazon.co.uk/Innovators-Dilemma-Technologies-Man...