They got lucky, IE6 in that sense was ready to die, and they basically declared mutiny with good cause.
Can you imagine any other scenario where insisting your idea is correct above every alternative, to the extent you can bypass the organisation and enforce your idea, could be utterly catastrophic? These developers in particular set up a system to subvert their own company.
They even said it themselves: Legal shit their pants because they tried it and saw Chrome as the first suggestion. They were lucky that the media didn't capitalise on that if they got the same ordering.
This story with Youtube and IE6 is romantic. It's not realistic or aspirational. Besides which, we would not hear of it if the attempt failed.