a STO has to go through regulations exactly as a IPO does, a STO has to be traded on a ATS or through a broker thus not being allowed to freely transact in a currency like manner thus not making it a cryptocurrency.
STO will be classified as a stock and it's not crypto. Those dumb ico never understand about that, there are some dumb scammers are using STO to create a new scam.
We must understand about the real definition of that.