I recall at the time (late 90s) these were popular dev platforms for regular folks. People would create fitness apps, time trackers, meal planners, etc. using WISYWIG interfaces and visual schema editors.
Of course, the 2000s, 2010s and 2020s were massive consolidation events with winner-takes-all SaaS eating the world.
My intuition here is that software for one is a temporary thing. Longevity has a quality of it's own, and eventually people just don't want to debug their own stuff. Sooner or later $5/month (or freemium) takes over.