Network effects are potent. Bitcoin will likely remain the reserve currency of the crypto market for decades to come. Ethereum 2.0 will actually become the scalability and usability solution for Bitcoin. If you notice, there's a lot of work happening to get Bitcoin usable on the Ethereum blockchain, with WBTC, tBTC etc. These will explode when Ethereum itself starts scaling with 2.0.

Aside from Bitcoin and Ethereum, all other tokens will remain niche due to a lack of network effect, and a dwindling timeline to develop one. Still, a niche could be worth billions if this space goes mainstream.