Indeed, all other altcoins already tried their best to take bitcoins throne but ultimately they all failed to deliver what's needed for that.
The rest of fiat currencies are just surviving out of network effect, but they lack the great features that make bitcoin special, they are all deprecated compared to bitcoin. Sooner or later we will shine and everyone holding BTC will find themselves rich.
Honestly almost those altcoin are just the same in bitcoin or just a clone that they are added a new feature.. but i can say for now they can not get the bitcoin throne but maybe in the future because bitcoin is limited or maybe bitcoin will be crash in the future..
The good thing is bitcoin is already been tested many for many hackers that they can not hack the whole blockchain..
unlike altcoin like ethereum issue before about they are hacked. so people are staying in safe place that is why bitcoin is a good investment that can make us rich..