Is it only about money or could it also be about its usefulness? I have no information on this, but like when Arecibo collapsed, there were discussions about ho

Is it only about money or could it also be about its usefulness? I have no information on this, but like when Arecibo collapsed, there were discussions about how much it would cost to fix it and how useful it could be. Maybe it has made a lot of research, and some new research directions would better make use of another kind of tool?