It’s highly likely that there will be popular digital currencies that people use, but I don’t think the crypto market will exist in its current form. I believe the crypto market exists as it does today because of Bitcoin, other cryptocurrencies emerged to offer solutions and various other features, and as they grew in popularity, more coins appeared, leading to the crypto market we see today. So if Bitcoin didn’t exist, there might still be digital currencies, but they wouldn’t be as sophisticated as what Bitcoin offers.
There are two possibilities, I think there will never be other coins like today or other currency technologies will emerge with different types. But we have to understand that before Bitcoin we had Ecash, E-Gold, Bit Gold, Hashcash, Liberty Reserve, Q Coin. All of these technologies even had their heyday, but centralization systems destroyed them because these centralization systems had centralized authority and easily faced problems and closure targets. Thus, the arrival of Bitcoin with its new system made Bitcoin resistant to centralization systems. So Bitcoin is also an improvement because it turns out Digital has developed. So Bitcoin also became an example for other crypto projects so that crypto continues to exist until today.
Source:
https://news.bitcoin.com/id/sebelum-bitcoin-4-mata-uang-digital-awal-dan-mengapa-mereka-runtuh/