That's the exact point that IAMAI is using to defend the case on cryptocurrency in Supreme Court of India, the fundamental right to carry out any occupation. But sadly the hearings are getting postponed every single day giving time to government  prepare their case against the crypto community.

No matter what the existing law says, the Government can always pass an amendment to that to make things favorable for them. Even worse, they can simply pass an ordinance in parliament to supersede the existing law. In either way, government has the power to do anything they want! Let's not have much hope now!