Re: "Has LibreOffice succeeded?"
Behind Excel 95? This is not true. In quite some aspects LibreOffice is even behind Excel 4.0 from 1992.
See https://bugs.documentfoundation.org/show_bug.cgi?id=51670 and specifically this screenshot https://bug-attachments.documentfoundation.org/attachment.cgi?id=142713 which I made last year since I was so annoyed I checked how far away LO chart is. And yes, I had nothing better to do on that day.