From my own startup & corporate experience,

1. product managers will try to make things dead easy, by setting up simple excel formulas & charts. Taking screenshots etc

2. data engineers will do more technical but opensourced solutions like superset & dbt

3. corporates usually tends to build the end UI themselves. I remember sth that (maybe?) Pinterest opensourced.

I deeply understand how hard it is to build a notebook like this. And there are indeed some problems lying in the collaboration and UX.

It's just so hard to propose those features, given the problem is usually the data itself and a highly competitive market. Popsql does not thrive as I remembered.