I don't understand why would anybody use bitcoin cash when there are better alternative like ethereum or litecoin for exemple. To me bitcoin cash is just another shitcoin and will never replace bitcoin, even if the price reach 3500 or 4000 dollars I am sure bitcoin is going to be around 30k or 40k at the same time.
The real reason bitcoincash is pumping is that it looks like Bitpay is going to enable it as the default currency on their merchant processing shopping cart.
If you want to buy something from a merchant that uses Bitpay, and bitcoin and BCH are the only options, you are going to use BCH. Ethereum and Litecoin can't be used until Bitpay enables them...