Bitcoin will develop layers that operate as the payment system in the future. There won't be another crypto filling that gap.
Bitcoin as we see it now will be how large transactions take place between businesses/governments/etc as store of value continues to make more sense globally.
With day to day transactions happening in Satoshis on a slightly less secure extremely fast network.
Bitcoin is a 50+ year project that is blowing past expectations in its first decade.
I highlight a few reasons why this is here: https://bit.ly/2RV1vix