You have to remember that ETH is a prime mover, so it's very difficult for someone to just came in and over throw ETH. For Solana I've heard a lot of good things about this project, so who knows, it might crack the top ten in the future.

2025? That's a long way to go, BTC and ETH will remain on top, and then we will have some new and old coins still in existence to be in the top 10. BCH used to be in the list, but now it has move down a bit and then we have BNB and then Cardano entering the picture. So as the price is volatile, and so is the top coins.