It started as an experiment for my personal website and I was in the same position as you're right now. We were already working on a Notion like app to take notes, but didn't make any money and probably went into the wrong direction. As my prototype seemed to work quite well, we decided to turn it into a product.
My initial goal was to do server-side analytics without the downsides of parsing access logs, but of course we now also have a "regular" JS snippet integration.
You can learn more about our journey here [1] and on our blog [2]. Let me know if you have any questions!