Who knows Bitcoin will the Number one in the future? Does anyone know that's bitcoin will still work in the future? I think here a new coin will get the first place in the crypto market. Any coin takes this place. Need more popularity and marketing with a good opportunity. 
So, My question is, Will Bitcoin remains the king of Crypto Market in the future?
For me, it depends on what will happen to the future. But I think some cryptos has a chance to take over the ranking. But bitcoin can still work in the future even it is not the top cryptocurrency if that happens, we know that ethereum, litecoin, and another crypto still valuable and some people are using it in many ways even it is not the king of cryptocurrency. 
But to those question about the next king of crypto in the future is still unknown, but can be predictable if you follow the crypto ranking.