It’s really not that hard to find data on GSuite vs Office market share that isn’t anecdotal
https://www.saasgenius.com/blog/why-office-365-is-overtaking...
https://www.saasgenius.com/blog/why-office-365-is-overtaking...
https://www.computerworld.com/article/3637079/as-google-move...
> Google grew its share of the productivity software market to 10.3% in 2020, according to research from Gartner, taking about 2% from Microsoft. Microsoft is still the clear leader however, with 89.2%. Overall, the productivity software suite market grew 18.2% during 2020.