The threat posed by new weight loss medicines is starting to become evident.Intuitive Surgical (ISRG -0.04%) is gearing up for its next act. With new products in development and an entire global market to penetrate with its robotic surgical systems, the current moment seems packed with opportunity for both the company and its shareholders.Nonetheless, Intuitive is only at the starting line of a fight against new rivals for the operations its system can perform. So let's analyze what's up next for this compa ...