Random Observation

In the last 2 movies I've watched I have noticed the same disclaimer at the beginning of the films. Both Dil Chahta Hai and Aamir featured a disclaimer saying:

All characters in this film are fictitious
and bear no resemblance to any person living or dead.
Any similarity is purely coincidental.

Now I know that it is wrong to draw a conclusion of the mass product based on 2 occurrences;however, I am wondering if this disclaimer is common in Bollywood films, and if so, why?

Unfortunately this post is merely posing the question and not answering it. My basic searches thus far haven't produced any answers, but if I figure it out soon, I will be sure to post! I just wanted to pose the question....