Since we can't predict accurately of how high the price of each coin can get to, i'll say that any of the altcoin can still reach $100k in the future but that doesn't mean it will supersede bitcoin. Maybe by then the price of 1btc will worth over $1 million. Just know that some of the altcoins still have possibility of a potential growth even if we can't identify the particular one that can perform just as bitcoin did. In 2010, the price of bitcoin was worth nothing, around $0.40, fast forward to 15 years later, the price skyrocket pass $100k so some other altcoins still reach $100k but it won't be easy.