as per your bullet 1: the networks decides the price - it is in theory referred to the rush towards the bottom, eventually making the price very very small.
bullet3: It depends shat you defines as ready? SIA does offer storage and retreiveal of files on a very basic base. The price mechanics works, the transfer of revenue based ont hte host ability to do proove of storage also works - I see amounts coming in from old contracts.
the issue still stands that the supply of storage is growing, but that the demand does grow much slower.. I personally do not see an increase in demand before there is a thin client that can be used for other services to build on also enabelling mobility as well. OR if SIA teams up with a 3rd party that can drive the demand up..