Apple is like this, I have seen plenty of instances where you have one person carrying a team of 5 or more on their back. I always wonder how they manage to compensate them when it’s clear they are getting 10x more done. Hopefully they get paid 10x, but something tells me that isn’t true.
When I was consulting I saw that everywhere. A team of ten people would have one or two primary contributors and often one person who had a negative impact on productivity.