This book is written for a foreign audience in mind. Most of the stuff in the book is what you can google or go to the news archive and get it.
The author has met a few people like Vijay Mallya, Jindal and Arnab. Besides that there hardly seems to be an in-depth analysis. Most of the things like the Lalit modi scandal or the Nirav modi scandal is from the newspapers.
The modi chapters were the most boring part. Please skip this book. Read ParanjoyGuhaThakurta book Gas wars or Feast of Vultures by Jeby Joseph instead if you want to understand crony capilasim