In terms of supply, Ethereum has unlimited supply.
In terms of security, Ethereum has inferior security compared to Bitcoin.
In terms of popularity, Bitcoin is known more than Ethereum.
In terms of price stability, Bitcoin is more stable, and Ethereum gained and lost almost 42% of its value in 3 months.
You shouldn't believe anyone who claims any crypto coin will surpass Bitcoin or even catch up to it in any field, whether it's an altcoin, meme coin, or shitcoin. The only coin that has surpassed Bitcoin is Monero, and only in security.
So no, I don't think Ethereum will ever catch up to Bitcoin.
AlphaBoy nailed it perfectly in terms of the way things
should be. ETH is still used to launch a universe of projects, some good and many crap, which Bitcoin cannot do. Fortunately, the really high average ETH network fees allows competitors a chance to eventually take over the number two spot.