I had previously doubted that Bitcoin would be replaced by another currency. But my mind has changed. Because I see there are many other cryptocurrencies that the developers are trying hard to solve the problems in cryptocurrencies. What about bitcoin? We don't know who are the developers and no effort is being made to develop it.
If you don't try hard, your rivals will win. Bitcoin's rivals will win too.
You are already wrong when you compared Bitcoin with altcoins. When an altcoin comes out whose team we do not know, it will fail for sure. Bitcoin was different. When a new altcoin presents itself just like Bitcoin, it will also fail 100 percent. Bitcoin is the one and only. Altcoins have to present something new other than just presenting themselves as options or alternatives to Bitcoin. They will fail if that is only what they have to offer.