BTW for clarity: the team working on this inside Anaconda is entirely separate from the PythonAnywhere team. It would have made a perfect Hollywood-ready story if it had been the same people...
I remember being blown away by the ResolverOne demonstration video, and if I recall correctly, some others you posted showing some of the other features and functionality.
The fact VisiData (my current 'spreadsheet' of choice) has acquired a sizeable following in that niche, and now Excel is following suit suggests you might have just been a little too far ahead of the curve.
One mystery we did not resolve (pun intended) was why it did not find its audience. Was it too early? Was data science not established enough as a field? Was it because it was not Excel (i.e. the dominant tool)?