I think like some have said Bitcoin will be held as gold and not used as a currency.

You could call me an Ethereum maximalist, but I also dont think Ethereum will be used as currency but as a store of value, similar to what Bitcoin is but for more complex use cases, NFTs and DeFi for ex, it's just too valuable for day to day stuff.

I would say from recent experience in a multichain game the coin that could be used as day to day currency will be be one with with a very low fees and fast transactions times. Candidates atm BNB, Cardano, Tron ... some other new coin.

If we're talking on pure volume, for the foreseeable future the most traded coin will probably continue to be a stablecoin, USDT or USDC.