well i think bitcoin is a digital money and an electronic currency too .  If we try to analyse both Bitcoin and altcoin ,Bitcoin is strong in the market and it have full control in the market. When Bitcoin price falls down altcoin value also depriciates so according to my point of view Bitcoin will remain at the top and be the king of the crypto world and Without bitcoin there's no Altcoins because you can't buy altcoin without using bitcoin in most cases so I will say bitcoin will always lead in the market