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.
Which is why stos are not existent anywhere and have low volume of projects participating in it
Most project prefer an ieo and also an ico
But worthless, Im more worried about the profit
Someone else might prefer the security
Yes, we have heard a lot about STO but in fact no project can execute STO and so it cannot be applied in this market. IEO is an excellent ICO alternative at this time