"What a concept!"... :)
Team 'proof-of-concept' is so important to the [stock] market right now (not EVERYTHING but important!...). Perhaps behind-the-scenes it is not such a big hang up, but large volume buyers (especially if they are public) will always have the small voice inside them urging them to wait until someone else "goes first."
Perhaps talk about field tests/beta-installs/whatever-- if they are in play... Even small confirmed sales will build the momentum because now it's not just an equities market thing -- it becomes a public, live case, discussion thing.... Even if non-finalized sales are [anonymously/confidentially] presented to large buyers that is not the same thing as public 'certification'. That is, how will the public respond to the product? Does it have market acceptance? Does it have public acceptance, since of course that is the benchmark that public actors will use to gauge...