This must have been expected considering the billions of dollars raised last year in these ICOs and with no registrations with the SEC. The SEC is doing their due diligence to ensure that investor interests are being protected where needed and to ensure laws intended to do so where not followed. This may cause some short term concern but the ICO public sale market has dried up lately due to these concerns. Their target will be those that are fraudulent and not those with try projects that provide utility to their token holders (at least in the short-term).
RE: SEC moves in and is putting regualtory pressure on Bitcoin and ICO funding