Well, I see crypto market is volatile and the crypto ranking keeps on changing every other set of time and Bitcoin is the most valuable cryptocurrency as of this generation but personally speaking, I don't see Bitcoin will always be the most valuable Cryptocurrency in the future and there has to be something else that has all the crypto features and advantages that crypto investors and enthusiasts would love and support.
Some people think that either Ethereum or Ripple will surpass Bitcoin's market cap in the future but of course it will require longer time like a decade or more.