Yeah, there won't be something like the next Bitcoin or Ether. I understood this truth not a long time ago. Several moths ago I believed EOS would be ETH killer, so I bought it on Ownr, later, when Dan left the project, I realized I should have invested in ETH.
Even though the understanding is very simple, Bitcoin and Ethereum are coins and tokens that have been really strong through development from time to time, so tokens and other coins will find it difficult to make resistance to both of them, especially if you want to shift the position of the two, obviously that is the thing which is very difficult although if you look at it the possibilities are very open.