I hope this will never happen of course, but for who have invested capitals, it may be a question someone have answered accurately to avoid an important loss.
Currently, there are no indications that this could happen anytime soon, but it remains a valid hypothesis and is likely to happen if several factors are available. Perhaps one of the most important factors that could lead to the collapse of Bitcoin is that users lose confidence in it, especially if they are able to find an alternative that can replace Bitcoin or has better features. Currently, there is no currency in the world that is able to compete with Bitcoin at all levels, but we cannot confirm that this will always happen in the future.
The situation you are talking about has already happened more than once. I am talking about when Bitcoin Cash was created, and many said that it could replace Bitcoin, and many altcoins with fast transaction execution and cheap fees tried to replace it. But nothing happened, and Bitcoin remained digital gold. Nothing could defeat it over all these years. And even when we saw strong lags and slowdowns on the network because of Ordinals, Bitcoin was still not thrown into oblivion. It remained number one in cryptocurrencies.
All the examples you mentioned can never be compared to Bitcoin. I am not saying that it is impossible to create a currency similar to Bitcoin in its properties and effectiveness. We have some cryptocurrencies that were created according to the same Satoshi protocol, such as Litecoin, but these projects did not gain enough popularity as Bitcoin, although some of them were able to add an additional layer of protection or strengthen the network. I repeat that this does not mean that we have completely stopped producing good projects or that Bitcoin is the master of all times, but currently there is no real competitor to it and we may not see competitors to it in the relatively long term.