That is true, but let's not forget that the userbase that needs only basic spreadsheet functions or simply a tool for writing text documents is vastly superior. One of my accountants used StarOffice like 20 years ago, and I recently serviced a business consultant office in which all machines had OpenOffice (installed before the LibreOffice split). Excel is for sure a monster feature-wise, but outside of certain niches the need of all those features is really low, then again many Office users didn't even know about its existence since all they need is to read and write text documents.