10: Their Natural Aversion To Sunlight
9: Their Creator, Lolth, Is Still Alive & Present
8: They're A Matriarchal Society
7: Their Society Runs On Slavery
6: The Drow Culture Is Counterproductive
5: They're More Attractive Than Other Elves
4: Some Become Disillusioned, Leading To Kindness
3: They're A Bit Short
2: Mind Flayers Fear Them
1: Attempts To Change The Racist Stereotype
If you remove what it is well known and what is wrong you have nothing left and this are the people who claim to be fans.
Except that the avoiding a knife in the back is the productive part. They are superior do to their combat prowess as well as manipulation and deception.
In real life scenarios it would probably fail do to the inability to expand, you can only expand if you have trust others with power. Second you need large number of trained people to create innovation and the heartless society would have to few trained people to generate innovation and in some cases it would purposely keep people down.
However it works perfectly in a medieval fantasy setting designed around combat prowess, where innovation means a new spell or a weapon enchant and education is not wide spread enough that population numbers would affect innovation.
So it would work in a drow society but not in a modern day society.
On top of that, it is not unique as a concept. The dark side in star wars is made the same way.