Apologies for dragging you into this, Staci. Like you, I would be happy to buy and read such a book, but I have no interest in taking on the project. Captain Jim is right - this will be a major undertaking. I once proposed co-writing a book with my tai-chi teacher, with lots of photos that I would take and edit. We concluded it would consume ~2,000 hours of our effort and
maybe sell 200 copies locally.
Not a very good business model......
I could envision something like each company sponsoring a history of their brand which they could then use independently in book and/or web form, and later combining those chapters into an overall book. But then choosing a common format and getting permissions from everyone will be an issue.