Up until this year. I would have said 99% certain Bitcoin will be replaced by another crypto but now I am not so sure. Bitcoin main use is a store of value such as gold, and a hedge against some global markets. As such there is very little chance of it getting replaced as a store of wealth /value. Sure other cryptos may be more useful and may start doing a lot more trades but why use them as a store of wealth instead of Bitcoin?

Also I don't think any other fork of Bitcoin has any chance of surpassing Bitcoin as a store of wealth now or in the future. I also think these forks do untold damage to Bitcoin and are the main driver of investors looking to store wealth (not just speculate)  to alts.