It doesn't have to be another clone. For example Quip was acquired by Sales and there are tons of modern collaboration software tools like Airtable, Notion, Slack, etc. They could've created a suite that was tailored around that while leveraging their existing integrations with Office.

Also people forget Box.com exists and does an even better job with corporate storage than Dropbox with much better features and UX.

https://www.notion.so/ is a thing, so there's probably a market, but it would be extremely hard to pull off.