A parallel is like, today we only have 1 thing that's gold and many banks/financial institutions that provide variety of services. All these institutions combined are worth a lot of money (the largest banks combined have roughly ~2T$ in market cap[1]), but gold market cap is like 11T$.
Just my 2 cents, I own both and hope both succeed.
1: https://www.statista.com/statistics/431751/leading-banks-usa...
The ethereum ecosystem is just so rich that there's no reason to leave it, well, maybe bsc and solana, but that's it.
1: https://preview.redd.it/c21qium7jyr61.png?width=1113&format=...
2: https://www.reddit.com/r/CryptoCurrency/comments/mmstrt/i_bo...
Why not? If such evidence exists why aren't you presenting it?
You can go to pandaanalytics.com if you'd like, and play with their index options. See what strategies have worked well. (I weight by market cap, top-10, no stablecoins)