Maybe it will decrease but this is normal tax policies as everyone in the world are paying tax from fiat earnings so i think it shall be the same in Crypto currencies earnings too. This is the consequence if we want Bitcoin will be declared legal in a central country in which it will require every citizens to pay Bitcoin tax as income tax but this is no issue to me as long as the Bitcoin users will be fully protected specially from the scam investments.
What makes you think we will be protected at all?
I still haven't got my money back from the CoinsMarkets thugs who robbed everyone.