[dnissley]

Interestingly, this is kind of an anti-example of what was asked for in the OP. Here, few people quit, not many.

[zomgbbq]

This was the beginning of an avalanche that led to most of the remaining engineers at Atari to leave and try to start their own third-party game companies to follow in the success of Activision.

[mdcds]

OP here. I assumed that many people needed to quit for a company to implode.

turns out I was wrong!