Joker is getting what he wants. Sid is unaware of what the Joker wants hence he is unable to do what he needs to in order to defeat him. Joker wants Sid to be ruined. Sid thinks Joker is after his family and is able to bring harm to those he loves. What in a way is happening is the Joker is winning. Because Sid is ignoring those that matter to DurNi the most. He missed first meeting with clients for the SR line, missed the cutting of his daughter's birthday cake, and now he is going to miss the PR event of the SR line. I hope Sid soon comes to know that if he ignores the Joker and continues to keep up with his family and his life then the Joker won't be able to harm anyone. Mainly because the Joker is Yash and he has no intention in actually bringing harm to Roshni or her family. So all the Joker will be doing is making Sid look like a bad person as he was once seen by DD. Yash wants to be the hero in both Roshni and DD's life.