It’s easy to get pressured into thinking it’s your responsibility. There’s also the risk that an unhappy company will make a non-copyleft clone of your project, pump resources into it until it’s what everyone uses by default, and then add proprietary extensions so no one uses the open-source version anymore, which, if you believe in the ideals of Free Software, is a bad thing.
As a counterpoint, I’ve had Ubuntu’s installer and grub’s updater overwrite and break Windows’ boot files several times, but never had the opposite happen (I’ve had both destroy themselves, though). Thankfully, I know how to rebuild the necessary parts of a Windows install, so it’s never been a catastrophe, but it’s irritating to see what’s always been the source of the problems I’ve had be held up as infallible. Possibly this is a problem unique to Ubuntu - I’m happy to blame Canonical - so maybe it could be entirely sidestepped with other distros.