I bet it will drop to zero in a few years. Especially when second layer solutions like lightning network and different privacy features will be implemented to BTC. Bitcoin cash is just a piece of shit and it always was so. 
I was expecting the same thing for ripple for years but these corporate backed craps are somehow managing to be alive and keep attracting investors by showing their higher marketcap figures. I mean to say BTCABC may stay alive as some big whales are always there to bumps them so that innocent investors will invest with them. This had happened many times in the last 15 months since August 1st of 2017 and I guess it may keep happening.