Something to wonder about: Could some people become more like psychopaths/sociopaths due to this form of dementia that comes on during prime working years (40-60) and strips people of empathy
before it wrecks memory, etc.:
Frontotemporal Dementia | Signs, Symptoms, & Diagnosis
I'm familiar with this disease. Amethyst is correct in observing that the behavioral variant of FTD can have some striking resemblances to psychotic behavior. Uninhibited actions or "going off" on someone in a verbal confrontation, for example. For that reason, FTD has often been misdiagnosed as mental illness.
And lack of empathy certainly an issue with both FTD and bosses who torment their underlings.
However, I don't think the OP's description is a very good match to FTD, for several reasons.
The behavioral symptoms of the disease begin as a middle-aged change in personality, often a dramatic one from the person's normal behavior. Also, there are only a few 10's of thousands of men and women with FTD in the U.S. FTD strikes very few people compared to mental illness, bad manners or damage from upbringing or traumatic life events.
The lack of empathy is more a subtle thing. I've come to realize that the common definition of "not putting oneself in another's shoes" is only part of the definition. With FTD, the loss of empathy also includes losing the ability to keep yourself inside your own personality's behavioral boundaries.
In my experience with a fair number of bosses - dating back to summer jobs where 18 y.o.'s supervised 16 y.o.'s - workplace personalities are established early and don't change dramatically over time. Sometimes a bad boss is just a bad boss. And - very often - a person with an overbearing, manipulative or "bossy" personality seeks to be the boss in the workplace, the home or other social settings.