I don't think altcoin will ever die, because more and more altcoins are appearing in the cryptocurrency world. some were destroyed, but newer ones appeared. In my opinion altcoin will still accompany bitcoin in the crypto market, but its popularity will not outperform bitcoin. when you ask, why is the dominance of the bitcoin market so fast. in my opinion because bitcoin is the best coin among other coins and bitcoin is more attractive to investors than altcoin. although bitcoin is one of the limited crypto currencies in supply with an exceptional development team, but in my opinion altcoin will always be in the crypto market and will never be obsolete. because there are definitely traders who use altcoin to make a profit.
Actually, altcoin's existence is important to cryptocurrencies. Let's say in a world where Bitcoin, the use of bitcoin, the trading of bitcoin is banned everywhere or somebody actually destroys the bitcoin network. People can move to other coin networks if tragedy happens. No one knows what the future brings.
It has the possibility to happen. Since altcoins are created to become its alternative.
If ever that bitcoin was banned in a certain country, its users can switch their funds instantly to altcoins so it will never die.
The dominance of bitcoin was rising fast because it has the largest blockchain, we must also consider that we can only buy an altcoin in the market using our funds that has been converted to bitcoin.
