That is because the Indians are too clever !
I can talk from experience
I have hired people from Hindu-stan who have ABSOLUTELY false credentials, even false MOFA stamps.
I have FIRED Hindu-stani for posing as Oracle Admins, IT Sec experts, Civil engineers, whereas they have never even seen the face of that particular university,
People from Hindu-stan are excellent suck ups, they can suck like no other.
Once a Hydrabadi, or a Mallu or Bihari gets in a company ... well very soon it will go down the drain. ( Tamils are fine, they like to walk a straight line and don't want any one to disturb them)
I can show you real examples of companies which have failed, and which are in the process of slow corrupted death.
I have seen many people say here, " If the Job is really tough, give it to some one from Pakistan. The Hindu-stan or Bengali simply are not built for hard work "