Yes, i believe that every investors, whether big or small will be given the product according to their preferences, when it comes to them been implemented by a public system, that must be when they must have gotten a lot of positive reviews that will attract big companies and even government parastatals, i really hope to see them achieve that level
Im pretty sure the device they pictured is a mockup, for them to test the software on, remember every company has different requirements, some may require multi-port devices etc, so i'd imagine the team would have a plan to test and then develop larger boxes, in the end they just have to get it working on ARM (raspberry pi) and then they can port that work over to other ARM boards.
You're right, that was why i talked about preferences on the part of users, is a sure thing that specificity will come in due time, that is the major reason why the initial launch should be a winner, as such scenario in this project triggers the impact that will beckon on investors, industries want this, governmental organizations will be willing to even fund such to their spec, BITFENCE just need to give them the reason why they should, is a good project