More and more altcoins prove the success of Bitcoin.
If it were not for the success of Bitcoin, there would not be so many altcoins.
There are also many altcoins that are developing very well like Bitcoin.
Among so many coins, Bitcoin is still king.
Technology is constantly updated and developed. There may be better technologies to replace Bitcoin. This is the future.
This time period is still dominated by Bitcoin. Other altcoins still depend on the development of Bitcoin.