Bollywood industry works like a relay race where the baton of creative hands is exchanged and is passed through generations.
Not necessarily within a film family, it can also be true for talent which is not even related.
For example all roles that Irrfan Khan used to get couple of years ago, started going to Nawazuddin Siddiqui and all the roles that use to go to Nawazuddin Siddiqui now go to Sohum Shah.
As actors
mature and progress, they look for new excitement and challenges in
their characters. Interesting what Irrfan would have like to do 5 years
back was passed on to Nawaz and now Sohum
All of them are known for their unusual looks and acting prowess.