yeah it is possible and i think it can easily take over enen though ethereum is a best and have great opportunity and projects.
actually i dont learn about bitcoin cash but i saw its growing 1st and it can take his position 2.
its my opinion .
Actually bitcoin cash just took the second place already, sudden rising in value just happened started two qeeks ago. Bitcoin cash is.now making rumors and making people panic on transferring money. Bitcoin cash can easily overtake etherium because it is a product of the bitcoin fork, it has also lower value and better transaction service. People are now seeing bitcoin cash a promising coin but Im definitely sure thag it will not reach the bitcoin value. Bitcoin is still the in demand and popular coin of all.
Bitcoin cash will I think suddenly fell, I guess it just hype because of segwit cancellation. Actually it drops the price already from its peak price. I dont believe it will take long its momentum of second place to btc or ethereum. I beleive it is just temporary. So basically, bitcoin is still the best and on top from others coins.