Honestly the only permanent solution to this is probably a big string of LeftPad events. Maintainers of projects like this that have been subsumed into corporate infrastructure should pull the plug and nuke the git repo.
Disastrous, apocalyptic consequences is the only way to get the attention of the real decision makers. If libxml2 just vanishes and someone explains to John Chrome or whoever that $150k a year will make the problem go away, it's a non-decision. $150k isn't even a rounding error on a rounding error for Google.
The only way to fight corporations just taking whatever they want is to absolutely wreck their shit when they misbehave.
Call it juvenile, sure, but corporations are not rational adults and usually behave like a child throwing a temper tantrum. There have to be real, painful and ongoing consequences in order to force a corporation to behave.