It's not a good comparison.
StarOffice was developed by a company that was trying to sell it the old fashioned way but became Open Source because Sun was trying to keep its Unix workstations viable (no way we'd see "Office for SPARC") and also challenging Microsoft with Java.
Oracle bought Sun. Oracle kept Sun products alive because they know one reason people $$$ for Oracle is support.
Once it got renamed and spun out of Oracle, LibreOffice has been kept alive by various stakeholders such as companies that have big fleets of heavily hacked instances, Eurocrats who wish they could break the hold of American software monopolies, linux distros who want another piece of shovelware to list on the box, etc.
A typical end user might not perceive that leaving an issue on GitHub is not good customer service, even if some people enjoy the liberty of fixing things for themselves.
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More seriously, Libreoffice is software you run on a computer you control (e.g. your desktop, a cloud server, whatever, ...) Since you are paying for the computer, you don't have conflicts about how generously to provision hardware.
Libreoffice is a ship in a bottle. 1000 years from now somebody might dig up an optical disk from a landfill and boot Libreoffice, but it is hard to believe Google Docs will last that long.