A bit of uninformed musing, if I may.
"Dark matter" is like "normal" matter except that it doesn't interact with light, i.e. electromagnetic radiation. But normal matter interacts with light only because it has the attribute of electric charge.
It has long been held that matter is fundamentally electrical. It is made primarily of three types of subatomic particles -- protons, electrons and neutrons -- two of which carry electric "charge", positive for protons, negative for electrons. Neutrons are uncharged, having only the attribute of mass.
But it appears these two basic attributes -- mass and charge -- are quite separate and separable. Most of the matter in the universe has only the attribute of mass, and thus is "dark". It is comparatively rare that the two attributes come together in one particle, but it is fortunate for us that they sometimes do, because we are made largely of particles in which they do come together. The combination of the two attributes is necessary to enable the complex and interesting interactions known as "chemistry", which lead to the interesting and exceedingly complex class of phenomena known as "life".
But life is rare in proportion to its complexity. By far, most of the matter in the universe is simple and inorganic. Even when life does occur, it is almost always comparatively simple, taking the form of cells that don't even have nuclei, i.e. bacteria and archaea. For most of the history of Earth, all of the life on it was of such simple kinds. Only when cells acquired nuclei, very late in the game, did they become able to form more complex aggregates, i.e. multicellular organisms. Even among multicellular organisms it is comparatively rare that a species attains the level and kind of "intelligence" exemplified by ourselves. Thus such intelligence has occurred, so far as we know, only extremely recently, in the past million years or so.
The era in which such "intelligent" life can understand itself well enough to seriously contemplate fashioning an analogue of itself, i.e. artificial intelligence, from scratch, is vastly shorter. Indeed it has scarcely begun.