BTC surely have the dominance and will continu to keep it during many months/years. It is the first one and today still the reference for every crypto. Like a lot of project on internet the first remains the first for long term. We re still at the beginning, perhaps others will tke the lead because of their interest but it will not be tomorrow for sure.
The Blockchain world will definitely change, and a new generation of currencies will enter the land with attractive and innovative ideas and policies.
most people always convince themselves with statements like this to justify their investment in altcoins that has been losing value. but the fact is bitcoin reached its bottom a very long time ago while altcoins continued declining because what you call "innovative ideas" were hot air and like a bubble it burst.