So we have a company that is growing and has costumers in the pipeline. Their first costumer is so happy that they want to extend the system considerably.

But that I guess is not enough either?

What more do you want other then happy costumers, new costumers and the ability to raise money on the bases of those things?

This is a company that builds actual machines. They make their own tunnel boring equipment. That is a capital intensive businesses not a software startup. They need to raise money to expand production.