I think your biggest hurdle will be securing quality academic (research-oriented)
LORs, and convincing the AdComs that you understand what is involved in doing PhD-level research.
If you are serious about making this kind of career change, I think it would be in your best interest to take a year of relevant undergraduate courses, and use that time and contact with professors to get research experience and at least one academic
letter of reference. Or complete a Masters program first, if you have the time.
Management PhD programs are rather competitive, even at the Top 50 level, because they admit so few students each year. And if you really have the intent to pursue an academic career you shouldn't aim below the Top 50 (though that's just my opinion).