Oh Microsoft.
Do you not read the daily news items about cloud breaches. Even you in the last few months have experienced one https://mashable.com/article/microsoft-account-takeover-vulnerability/.
I have several OneNote notebook that will NEVER migrate to the cloud. Need I sight: intellectual property concerns, confidentiality, personal details, theft, and the mundane. Then there is the ambiguity of your PDS/User agreement as to who actually owns the property stored in you cloud and what you can do with it.
So many of your users have displayed their dismay at the death of the desktop OneNote, but you have withdrawn. You speak of many users driving this, but did you speak to me or the other power users in this forum? OneNote 2007 still is fond memory.
OneNote desktop is the only reason I stay with Microsoft. All your other apps are replaceable. But the cloud is deal breaker.
The feature denuded Windows 10 app with its space consuming sidebars designed for finger computer is not something many of us want or need.
I hate to tell you, but it is us, power users who have evangelised OneNote with our friends, colleagues and organisations over the years. As someone that was about to implement a large scale OneNote I'm already looking for an alternative.
In a day and age of catering to clients you are offering us nothing more a choice between trite colour combinations.