A riskless investment I just see this as a marketing tool and no more than that, all Developers certainly say their products are the best and hope that there are investors who might invest, this is nothing special
This could be a Exclusive Marketing Strategy but for some investors its really a important feature.
You see many ICO in past went away with our funds without any sign of development or anything. Here they are promising the return of investment if they fails to develop their product!