A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Generally, Microsoft is capable of implementing needed changes in their products. The fact that the backup prompts continue indicates that they don't really care if they annoy the user and they have no intent to correct the problem. Eventually, they will probably make it impossible to use local storage for your work.
I am reminded of the 1960's when one company, IBM, dominated the computer industry. They used semi-corrupt sales practices on the corporate managers, like sending gorgeous young women, etc. Remember: in computing, the practitioners never choose the tools; that is done by the managers. IBM was high minded and arrogant. And then look what happened to them.
Other operating systems and office products are now lurking, waiting for Microsoft to make a fatal fumble... Computing knowledge is too widely dispersed for Microsoft to enjoy a monopoly.