This is a sobering post that revisits the notion that given a project, how many developers have to be hit by a bus before it stalls.
According to the methodology explained in the article, in 2015 it took 57 developers for the Linux kernel to fail, now it appears that it takes 8.
That’s not good.
If the lessons that I’ve learned about lightbulb replacement are applicable, then the nationality of the developers on the bus will impact the answer to your question.