Coming back to any other altcoins, if you're expecting some other altcoin to be copying bitcoin to have value then you will end up only in disappointment because there are less possibilities for any other coin to have such value like bitcoins at any time in future. I mean altcoins may value like what bitcoin is today but cannot match bitcoins at any given point of time.
For example, bitcoin valued $1000 in 2013 and ETH reached that level in 2018. Currently bitcoin is valuing around $9000 and some other coin may value $9000 by 2023/2025 but bitcoin may value in millions at that times.