@HeavenlyPossum There are Evil Villain Schools and evil villains do intentionally learn from one another. These days the evil villain schools are mainly online and folk like Andrew Tate are their professors; but elite public schools, for example, have been in the Evil Villain Education business for literally centuries, and there are also real life clubs and bars where wannabe Evil Villains go to hang out with their heroes and mentors.
Much like other subcultures, really.