It seems to me that BTC and Ethereum thank their growth prospects to their established names, rather than the tech behind it.
If you think it's different, let me know.
Why?
If people hadn't known about Bitcoin, then we would had nothing to witness something called altcoin and probably cryptocurrency wouldn't had a strength like what we have currently.
Also Ethereum is the first one to release smart contract followed by BNB, Polygon etc. There are always a tech behind it that makes the cryptocurrency as a whole become stronger.