(from the article) >Did the physics actually work? Check

I apologize if this question is terribly ignorant, but do investors publicly disclose the results of due diligence that would lead them to believe in the functionality and practicality of such a product? I'm very interested in learning their opinions on the challenges presented by the naysayers (with whom I agree right now).

I appreciate everyone who provided sources that prove uBeam has, at the very least, some huge challenges to overcome in practicality. Like you mention, though, I imagine that these investors have probably considered these challenges.

As far as I know the circulation of DD reports is extremely limited, usually to the company paying for the report and occasionally the management of the company that was looked at.

In the case of outright BS it stays with the VC, if there are useful 'to-fix' prior to closing items then they usually get passed (sometimes edited or excerpted) to the company.

A general public disclosure is a possibility but I've never seen one, investors are not 'speaking for the company' in any way and if investors started to release such sensitive documents that would be considered a false step by the company (and probably rightly so, the information gathered during the process is company confidential and no VC in their right mind would want to suggest to future investments that they have a cavalier attitude towards such information, be it positive or negative, disclosure should be up to the officers of the company).