Mike Tyson had big plans til he got punched in the mouth. Haha.
I don't think it was that Ronda was a bad striker or can't take a punch. She just ended up with bad people around her. I've seen her do well with striking in her earlier fights but, like with Tyson, that was when her opponents were real intimidated by her. The problem with her standup fighting is the lack of movement, she doesn't move with her feet at all well and doesn't even move her head. That's why she was completely destroyed by good strikers who didn't go into the fight being at all intimidated by her. It was just like target practice for them and the target never moved.
Maybe Ronda just had bad trainers. Maybe having an MMA boyfriend who is also a loser, made her one as well.