The high of Bitcoin was reached when transactions took more then a few cents to process. With that the growth is basically stopped.
Of course such things take a year or two to actually have an effect.
Bitcoin does have the huge advantage of being the first. That cannot be overestimated.
My guess would be it ends up an exchange coin - the base where every coin trade is based on - but not actually used.
Transactions will instead happen with other coins, using multi-coin payment apps.
I do really really hope, one appcoin will get out big, that's Gridcoin. Because there is no other coin that benefits something, in this case science, so much.
Don't forget steemit and the potential of Dash to become digital cash. EOS if delivered will be able to run the FAANG companies cyber infrastructure and still have much more space left for other people's products.
I also have high hopes for SONM and the new internet than MaidSafe is trying to create.
Also there is BAT and Brave browser that will put a serious dent on Goolag. The project is founded by Brendan Eich who designed JavaScrip and co-founded Mozilla.