I don't think that there is something that bitcoin cash solved because for me, it was just a forced fork in bitcoin so they can have an another coin to get some profits and also to get some free money with it but in overall, there is no change in having bitcoin cash aside from upgraded block size.
yeah.it looks like ETH and ETCyou can see that the ETC always follow the ETH rise or down,
it just some guys wants to get more free money from the market!