During the PC boom in the 90s many of the hot products were productivity apps that allowed non-programmers to do "computing" (for lack of a better term).
- Access/dBase/Filemaker
- Word/WordPerfect
- Excel/Lotus
- Photoshop
- Harvard Graphics (if anyone remembers that one)
- Pagemaker
- Corel Draw/Illustrator
These were the types of apps that many young programmers, myself included, wanted to work on.
After the internet happened effort moved away from productivity apps, and towards communication apps. That's where all the hyper growth was, so that's understandable.
In the meantime, not much has really changed with productivity apps. The big apps from 90s are still the big apps of today. But as browsers have improved significantly in the past couple years, I think there is going to be a resurgence in web based productivity apps. Webflow is a good example. They are basically building a traditional style productivity app in the browser.