I think you're making a mistake in trying to talk about 1 reason for DV. Each abuser abuses for their own reasons, they are not all the same. This is why the problem is so hard to eradicate.
In my previous relationship, my exp had been brought up by a strong single mother. He loved and respected her, honestly thought women should be equal and hated any show of sexism BUT she was physically violent to me because he didn't know how else to make me do what he wanted. He was like this with others, but less so because he didn't care so much about what others did.
Some abusive people are that way because it's what they learned from the relationships around them, some because they hate women, some because they are controlling, some because they are sadistic, some because they're selfish, some because they're insecure, some because they were spoiled and never told no. And there are a million more reasons.
Just as big an issue imo, and possibly a better question, is why do many people know about dv, witness it in some cases, but turn a blind eye? That is what I found the hardest - some of my exp's family knew and sympathised with me but didn't help at all, except his mum. When she found out, she kicked him out, gave him the bollocking of his life and told him if he did anything like it again, she'd report him to the police. I believe her too. She helped me leave him. She worked with my mum to keep him away - more people like her would help massively.