Most investors buy Bitcoin for the sole purpose of getting rich thanks to it. And it is quite justified. Under the conditions of our life, money is needed in all its spheres. Therefore, people have no choice but to constantly try to earn as much money as possible (but of course there are exceptions).
As long as Bitcoin will have value and it will be possible to earn money with it, people will hold it. But as soon as Bitcoin runs out and a new opportunity appears, most people will sell it. In this I see nothing wrong, this is life and the search for gains for the sake of survival. And it is impossible to call betrayal.