If they want to attract carriers/suppliers they need to deploy a business plan for sure since they want to see plain numbers eventually
True, also a demo of how things will work out in the system of logistics. These basic things increases the value of the overall project in the view of investors. People tend to think more about planning than execution these days.
And the output is that many companies fail at execution. That said, I think that demos are just useless, I prefer an alpha version, which, while is bugged for sure, it shows almost all the functions