Back in the day, these companies stayed in their lane, so to speak.
When you bought a computer, that’s all it was. It had much more of a toy or appliance like appeal rather than this deeply integrated life augmenter. The idea that a company like Apple or even a bigger (at the time) company like Microsoft would own a movie/TV studio and broadcast major league sports was an insane idea.
I will say regarding keynotes, it wasn’t limited to the genuine nature of the companies. The 90s and 2000s were just on different levels of the pace of technology development. I am sure that even Microsoft had an exciting keynote or two and they were the evil empire in those days.