> 3) When you buy something (say Domain name in Indian company),there are chances that they sell your information across many corporate interests without your consent.

Here's a fun experiment. Create a temporary email or an email alias & register it on naukri.com & watch your inbox get flooded with non-job related emails.

And here's another one, go to a local store for porting your sim, and receive a ton of calls for loan & credit cards (which unfortunately is quite common).

Data is sold in India by almost every entity.