Banning cryptocurrencies is too difficult, especially in democratic countries that guarantees freedom for their citizens. In fact, prohibiting them would mean limiting their freedoms, and this is not compatible with a truly free country. In India an association sued the Central Bank and it won because the Central Bank's charges proved to be unconstitutional. This is generally what happens in free countries.
This ruling is a big push for the whole sector. In a country where intelligence is more advanced than technology, this restriction has greatly limited investment and private initiative. While the Indian central bank tries to develop its digital currency so as not to be found technologically unprepared, it is now faced with a legal precedent that puts the wheels on its plan to crack down on cryptocurrencies. The restrictions seem to be driven by a protectionist spirit aimed to limit that the national economy is invaded by bad actors capable of taking advantage by an unregulated space. The perverse effect of these measures turns out to be a great limitation to the opportunities lost by those who would have been able to seize the opportunities at the right time. For this reason the great work of the group presented before the supreme court has given way to a precedent that could radically change the situation in India.