Oh, and this warrants an extra reply and totally not because I forgot and did not want to edit:
You claim to know about crypto, but postulate, that bitcoin will just be a normal commodity being traded, once the last coin has been mined.
With that statement you have shown that you know not very much about bitcoin. The currency becomes unusable, literally, should there no more mining be done. It is true, that the coins are finite, but the very design states, that you earn coins by providing computational power to make transactions happen. And that needed power grows, as the currency grows in age. Blockchains are not a good concept to be used on a large scale.