Very valid point. But this assumes that everyone will stop working on the main chain if the Classic implementation passes the consensus threshold, which I doubt.
That's not what I meant. I was comparing the current two groups, people contributing to Core and people who are/will contribute to Classic according to their website. I don't think that everyone would stop working on Bitcoin but I'm sure that we would lose some very important names due to this.
If you take emotion out of this, the version that reaches consensus first, reaches consensus for everyone. This happens every 10 minutes already. Joining the consensus opionion is part of the protocol.
On paper, why sould anyone leave? This is how bitcoin is supposed to work.