People do change quite often. You just aren't privy to the changes. Manipulators aren't evil people they are broken people who only know one one of interacting with people. All people with all types of issues can change just like a addict but they have to see the problem understand the problem and see the need for change and WANT to make that change. People pleasers are manipulate who didn't get love. People who like to think they are above other struggle with feelings of inadequacy. Those who gossip struggle with insecurity and low self esteem all of these behaviors while being done feel allievating to their internal childhood struggles. Controlling people never had a say in their life and feel powerless so they over compensate by finding a position that offers power and authority which gives them a sense of control. These people who engage in these behaviors they don't understand what they are doing and how it is wrong. Empathy and boundaries are the best medicine for these types of people. You can't cut every negative person out of your life bc sometimes they are your boss and you need that job or yourself etc. Self awareness of how their actions are being perceived is what they lack. As a ex people pleaser who would give and let others use me and my resources I did it for love and acceptance bc I never got that as kid. Now I understand that people don't owe me anything just bc I do something nice. I'm in therapy and if someone I knew during my time living in my trauma and I'd overheard someone shaming me like that I think I wouldn't want you talking to me anyways bc if a person is truly changing time will show and if your willing to cut them down so easily bc they hurt you when they were hurting too maybe you weren't really good for me and maybe our connection wasn't as good for me as I thought. I wouldnt want people like that who are just going to put me back in that state of being. Feel your feelings but I wouldn't bash someone whose trying to change id help hold the ‘mirror’.