Who would have a long simmering problem with John Ramsey? If not an employee, then who? It would have to be someone that John was completely unaware of.

Who was John close enough too that they may not like him and close enough for him to be able to know the families comings and goings, bonus amount and know the had a little girl?

I feel John would be completely unaware of this person...someone he quite possibly had never even met in person.

What if this perp just heard about John all the time. JOhn this and JOhn that. He's so successful, he's this and that. The perp starts obssessing,he's jealous. Maybe someone that he was close too and always longed for the kind of attention that this person was paying John. How come he didn't look up to him like he did John?

Maybe he wasn't successful enough for him, had disappointed him all his life.

He wanted this John Ramsey who gleaning all this attention to suffer, maybe feel a loss like he had felt.

That's who I feel has committed this murder. Someone close, yet far.