Ethereum mainnet had a massive advantage in 2021: everything was in one place. But because everything was in one place, it wasn’t able to scale.
It was presented with a choice: Scale horizontally (many chains) or scale vertically (one big chain). It chose the former with a rollup-centric roadmap, and avoided solutions like sharding that would split the difference between these approaches.
This created fragmentation, opening an opportunity for Solana. Solana enjoyed the same advantage for many years as the only SVM chain.
But will this advantage persist as Solana network extensions (i.e. rollups) gain adoption? Or will Solana become as fragmented as Ethereum?