I don't wanna give a brief explanation of detailing the proofs. I believe that bitcoin is still profitable in India. Yes, in the very recent time, Indian finance minister left a statement about bitcoin and other cryptocurrencies. But the media were misinterpreted his statement and started to promote like " India bans bitcoins" but that is not true.
The truth is India bans the usage of bitcoin in financial crimes and other illicit activities, but not for general usage. So if you are a cryptocurrency enthusiast, sure you can make the trade with Indian bitcoin traders, and can invest in bitcoin as usual.
As the title claims about the profitable bitcoin business for 2018! I just want to share you an exclusive article, which is detailing the most profitable bitcoin and cryptocurrency business. and the skeleton of cryptocurrency business family. Check out the article here