If it was a sponsored clinical trial, I would be the sponsor as @ppp23 and @mark mentions, the sponsor selects the PI, prepares and submits clinical trial application and amendments to the appropriate regulatory agencies and ensures that the clinical study is conducted in accordance with Good Clinical Practices (GCP). I think its exciting to have the device/drug and create the protocol that will be tested. I think I would want to be sponsor of some cutting edge medical device like a robotic device or something incorporating the use of AI.