If you know anything about leadership and vision, It's the leadership and vision that matters not so much the details under it. Imran Khan had this vision to build a cancer hospital that will also offer free treatment for poors. He then went all over the world to raise funds and put together teams. People contributed because IK had the pull power. Why couldn't anyone else do it?
Another example for your understanding...It was Quaid Azam's vision and leadership that we have Pakistan today. How many times we talk about many other people who helped him and worked on his team? Because it's the leader and vision that drives it.