I guess it's all actually is good for the crypto/blockchain world - yes, the people searching for huge profits in a short time might be disappointed as this will most probably make prices more stable with greater adoption and the need for stability in the markets - and it might take some of the revenues with taxes.
but - if it's legal and there isn't a dark shadow looming in the future and threatening to turn the tables - more and more traditional investors will want a portion of this world and money will flow to the markets.
also - revenue will be available to smart ICO's investors as the value of good initiatives can rise overwhelmingly even if regulated, and let's pit it straight forward - the value of steem will surely increase with stability in the markets and increasing interest in the platform, and that's one of the most important things for people here.