Good basic article about what they are dealing with. It seems a bit of an advertisement for both since holders of ETC also got equal stake in ETH.

But I do agree this will happen...
I have said from the very beginning of the hangout series that you will see precisely this when there are problems in chains. There is little reason for blockchains, when confronted with potentially existential forks.
Instead of forking and forcing all holders to go one way, it is intelligent to let both exist and at the time of the fork in question give equal stake in the competing fork.

Now the competition is between holders who win EITHER WAY!

Thanks for the input ;)