The discussion is in my OP and is, 1) what issues should I be thinking about in valuing a ROAD career, and 2) what are the exact consequences to reneging on a match. Only a few posters have contributed any meaningful insight, and no one seems to know an exact number for 2, including you and some self proclaimed PD, and instead toss around vague generalities. I find it hard to believe there are residencies that would take IMGs who are 6 to 10 years out of med school with low boards after practicing third world medicine and not AMGs w good boards who decided to give medicine another shot, after working 100 hr weeks in one of the most competitive fields on earth.
I see it as this. If you bail out now, you will definitely be breaking your match contract, and we can't tell for certain you will be banned for 1 year or 5 years or forever because the NRMP does not specifically give a time frame, so we cannot make that time frame up for you. Nevertheless, think about the following. The ROAD specialties are difficult to match into NOW, maybe sans gas, so they are not likely to get easier in the future. There will be more, not less, med students, and AMGs at that, who are fresh out of med school and eager to start, who may have the same or better profiles than you. You might think that you are a superstar, and may have a good profile, but in the ROAD specialties, you are competing with a TON of people with great profiles, who will be fresh out of med school. There is a distinct preference for those who are recent out of med school without a doubt.
So let's say you take your PE job now. You make 250k now, you are working 100 hours, it works out, you are making a ton in a few years, bla bla. Great if that scenario occurs for the next 30 years or whatever. On the other hand, say another recession occurs, there is downsizing, you get laid off with many others in the field. What next? You don't have an MBA, you don't have a finance degree, you only have an MD without a residency, which is worthless. What do you fall back on? Say you say ok this is not looking good, and I want to give medicine a try again. You are 3+ years out of med school, with no internship, no residency, and having been a match violator.
Most programs in the ROAD specialties will be wary to take someone who has ALREADY BAILED, they don't need to take a second look at your application because they have hundreds of application to fill their few spots, and there are ALWAYS people who don't match despite great profiles. Sure, maybe FM/IM/peds may take you since they are desperate and an English speaking AMG may be better than a FMG who lacks English proficiency and who's profile is dubious, but I doubt you'll be happy in those specialties given your posts.
Further, you refuse to divulge what specialty you have matched into. You keep hinting that it's not radiology. Ok, say you matched into derm. If you did and you reneg on your contract now, you will be 100% done in derm, not only is it a small field and people talk, same scenario if you are in rad-onc, probably even worse.
So that's my 2 cents, in an honest neutral look at the possibilities that you propose. My suggestion as someone else said is to finish your ROAD specialty. It's possible that you may be able to develop your skills in PE on the side, I don't know if that's a possibility or not. If you hate your ROAD specialty then bail then. I would not bail before doing your internship. An MD without an internship/residency is just a very expensive piece of paper.