> If you could only invest in one tech company, who would have invested in Apple/Amazon/Google instead of IBM?
IMHO there shouldn't be Apple/Amazon/Google/IBM companies as they are today. I want Google and other companies be splitted to AdWords, GoogleSearch, YouTube, Android, Waymo companies. And they should not use their dominant/monopolistic position in search/ads areas to get unfair advantage in other areas.
So you would have to choose your investment between Android/Apple/WinMobile OS, AdWords/AdMob ads, Waymo/Cruise cars, Google/Yahoo/DuckDuckGo search, YouTube/Vimeo videos.