Some parts of the list already have turned into a dark list. The Netherlands, for instance, and Ireland, have almost completely turned dark. From the 13 supercomputers in the Netherlands in the list, we know only of one machine (Cartesius 2) who owns it (SURFsara) and what it is used for (to support scientific research). The other 12 systems are Lenovo computers, that much we know, all owned by one software company. So, for the Netherlands, the TOP500 already almost has lost much of its significance. For Ireland, already all 13 systems are on the dark side of the list.
Both Ireland and the Netherlands are only one system behind Germany that has 14 systems in the TOP500 list. But for these systems we know where they are located and what they are used for. The more parts of the TOP500 list get to the dark side, the more the TOP500 list looses its importance as a comparison and analysis tool. This is not in the interest of the community nor in the interest of the vendors, so let us hope the list owners find a solution before 80% of the list has turned dark.