All interesting history on Fox. If I remember right, I had read (possibly PC Magazine) that when Borland bought Ashton-Tate, Borland then dropped the Ashton-Tate's lawsuit against Fox Software. Borland at the time was being sued by Lotus over Quattro Pro infringing on 1-2-3's macro language. Borland was arguing in court that the macro language was not copyrightable (which is what Fox was arguing in its case over the x-base language syntax). So when the case against Fox was dropped, Microsoft then moved to acquire Fox Software.
Borland did have several outstanding products - Sidekick, Turbo Pascal and Turbo C (as well as Quattro Pro). When they purchased Ashton-Tate (which only had a dying product line) and then purchased WordPerfect (also a dying product), it lead to their demise as well. Which was a loss to the community.
In many ways, I could wish that Fox Software refused the buyout offer. FoxPro at the time was already on Linux and Macintosh as a product. It would only have gotten better over the years and most likely been a serious contender today. I would have expected that Fox Software would have come out with a server product that was integrated with the FoxPro UI.
Microsoft did move FoxPro forward with Visual FoxPro making it object oriented and event driven. FoxPro was just not the money maker that Microsoft wanted and having acquired it, Microsoft kept it from being a competitor to Access or MSSQL server.