Consider you hold 12'000'000ETC on the old blockchain from a DAO hack , would you be interested in keeping that chain alive , functional and valuable ?
Ofc : I am not implying only "bad" people are interested as there are some opportunities for everyone , very well explained here : https://steemit.com/cryptocurrency/@thecryptofiend/the-rise-of-ethereum-classic-a-black-swan-moment