I have never invested in a working product. I wonder what dividends or income it can bring during the year.
If you evaluate a business plan and current growth information it is aiming for 8-12% in dividends per year. Then, in addition, there is a value of your token/share that is subject to increase if the company performs well. You should compare this to ICO models where utility and trading determine the outcome which is much more risk in our opinion. STO gives you shareholder value.