Diagnostic imaging companies - each of the big ones (Siemens, GE, Philips) offer in-house financing for MRI, CT, etc., that they advertise to physicians. They also all offer specialist consulting help to facilitate you getting a CoN (Certificate of Need) for your facility. Hell, they also will help you find other physicians in your area who'd like to go in on setting up a DI facility (and will assist with spinning up the practice).
We then find that physicians who own a DI practice (or a share in one) refer their patients to diagnostic imaging at rates several standard deviations above other physicians and at rates that are "statistically improbable" when correlated to underlying ICD-10 diagnostic codes.
Upton Sinclair comes to mind ("It is difficult to get a man to understand something, when his salary depends on his not understanding it").