I don't have first hand knowledge of this; I am a programmer. I hear about this from a family member who is a radiologist. roentgen may obviously speak with more authority about his situation.
If we can read pediatric brain MRIs more accurately from across the country than the local small group, why shouldn't we?
One additional note. My 'customers' are not really the patients, my customers are the physicians who order the studies. Most hospitals and referring physicians demand that I be available to speak with face-to-face, so there are parts of radiology that cannot be performed remotely.
See my other answers. For each scan or xray performed, two fees are billed. The reimbursements are generally set in stone, and non-negotiable. Additionally, "fee-splitting" is Medicaire fraud. Meaning, if you as an independent businessperson own an imaging center and I read cases for you, you cannot keep any of my "professional fee" for reading the case. So there is no way for another radiologist to compete on price with me, it is simply illegal to offer to read the cases for less.
If you work for a hospital they keep the technical fee, and you get whatever professional fees you can collect. Insurance companies hate paying, so they will find any reason to deny. Collection rates range between 60% and 80%.
My partners and I own imaging centers, we collect both fees. So we are running a business, and I don't consider it small anymore.