I'm sure Barry Silbert will get more people to invest in ETC whether it being through Grayscale or have companies launch ICO's on ETC.
IF and when ETH goes to POS what will happen to the miners? Most will probably go mine ETC. If ETC can't get any Dapps built on it, then it will probably be one massive failure. I doubt that will happen. Also if ETH keeps encountering problems in the future. People might look to ETC if ETC can offer solutions to the problems ETH faces.
Good and valid points!