IMO Microsoft's best long-lived products have always been both finished solutions to your problems and platforms to help you develop more solutions, and Microsoft leadership has always recognized this. Examples: Windows. Office. Dynamics (their Salesforce competitor).
But even if a product doesn't meet that "why not both?" ideal, there is always going to be room for it at Microsoft, as long as it is not only a good or at least mediocre product by itself, but also works to sell you on the whole Microsoft ecosystem. Sometimes that is a bad thing (see all the Windows adware for Bing, Copilot, and M365). But that at least is where Microsoft remains consistent.