The OP doesn't seem to be able to take any personal responsibility for his ideas flopping. Can't put one iota of blame on himself.

I've spent enough time to know that the culture of a 'corporate' work environment forces you into a particular way of thinking

They can't appreciate the idea because they don't understand the technical details

Perhaps my cofounders had their judgement clouded by creating one too many PowerPoint decks or Excel models

Do you think maybe it has at least a little to do with a) your idea b) the way you're selling the idea or c) you?