ad-supported version of Office

Microsoft is testing free Office for Windows apps with ads

The free desktop versions of Word, Excel, and PowerPoint lack certain
features in addition to running ads.

...Microsoft has been quietly testing an ad-supported version in
certain countries.
...
...
The ad-supported version of Office includes banners that are
permanently visible at the side, as well as 15-second video ads that
play every few hours, according to Beebom. Microsoft also forces users
of this free version of Office to store documents in OneDrive, with
support for local file storage disabled.

https://www.theverge.com/news/618278/microsoft-office-free-windows-apps-ad-supported-version

I wonder how many people don't know about Apache OpenOffice?