An opportunity to train the neural networks is a good trick by Skychain. But as far as I know, great resources are required in order to perform it. How will the company cover all the costs of such computing resources and still get income? In my opinion, its impossible.
Its quite possible if you dont buy and maintain any computing resources but use the third-parties ones. In this case the project can be profitable and work without any problems.
The computing resources of the third parties? Well, in my opinion, renting third-parties computing resources is a doubtful idea, the costs are still huge.