I know you probably mean this tongue-in-cheek, but perhaps task management (Asana/Trello/etc.) and customer helpdesk (Zendesk/Freshdesk/etc.)?
Having all those tools integrated with the rest of another suite like Microsoft 365 would be enticing to corporate users. It would definitely starve out competition, but isn't new in Microsoft playbook.
They already have both Azure Devops and GitHub converging on Confluence and Jira (and BitBucket) from different directions. Azure Devops also has Teams integrations.
Having all those tools integrated with the rest of another suite like Microsoft 365 would be enticing to corporate users. It would definitely starve out competition, but isn't new in Microsoft playbook.