Getty Images; Alyssa Powell/BI Distillation used to be a legitimate AI research technique. Now it's a competitive weapon. Top AI labs worry distillation is upending their business models. No one knows where to draw the line. Even if they did, it would be difficult to stop distillation. In the tech world, AI distillation began as a benign research idea. It's now morphed into a shadow economy that threatens the business model underpinning trillions of dollars in AI investment. The technique invo