Is there a problem this solves better and cheaper than other available solutions? If there is I can't see it. Did they even do a proper business case? I can't

Is there a problem this solves better and cheaper than other available solutions? If there is I can't see it. Did they even do a proper business case? I can't see startups using it for a ton of reasons. I can't see most businesses using it. They want their data in their data center. The only use I can see would be a way for MS to sell software as a service to companies that want hosted Exchange, sharepoint, etc.