Let me introduce another variable. Maybe it's a gradual end of BTC, but in a way that something else takes it place. Like it happened with social media (and is happening still). BTC might not go away completly, and still stay as a store of value, but something else takes the top spot.
The Bible actually said it. Oh ye men of little faith. You have no faith on bitcoin that is why you sound as if bitcoin will end like other Ponzi schemes on social media. Do you really understand what is bitcoin? Let me give you a clue on it. Bitcoin is a decentralized digital currency which means nobody or central authority controls the asset. There is no database in it. Everyone control their money in their wallet by themselves, there is no retrieval of password if you lost or miss placed your seed phrase. And if you miss placed or lost your seed phrase, you have lost all the money in your account and nobody can retrieve it for you. So for the OP and you saying, bitcoin is coming to an end, I see it as an irony. Bitcoin has come to stay and as a coin or currency in the exchange market, it must fruster ( coming down and up). I hope all currencies are like that. Bitcoin will definitely go up.