I would suggest something a bit off the wall (shocker). Have you thought about making a cheap (<$200) explainer sketch video and getting it in the hands of small/medium enterprises, then getting thier feedback in exchange for x% off the first year when commercially ready or x% off first year of the current release?
That could lead to investment discussions but even if not it would give you more data to support your projections in the financials...and perhaps entice a team of part-timers willing to "fine tune" until you raise money. Yes, it's not quantitiative, but if you could get 100 companies to see the sketch video (1 minute max) you would get some indication of overall appeal, and if a few could be incentivized to license the product, a better idea of purchase intent for the market as a whole. Just a thought...
More feedback is always better...
OK so it sounds like your CEO just decided the fit wasn't there. But I'm still a bit confused by your product and how it fits with F100 companies since what you really seem to be supporting is piece work.
note also be careful about the hype out there about the "collaborative economy" (and that may well be at the real core of your CEO quitting. I say this because THIS paragraph caught my eye
A generation ago, we worked our whole careers for companies that provided pensions and benefits.
See I remember being told EXACTLY THAT "a generation ago". And yet now you are pointing to my generation and saying we were "so stable" (and in the end we have been - though the pensions were never there). It makes me question the 40% being "independent" in the future. And if that's not what happens, what is your value prop? And I ask this because from what you state as your value prop, the fit with an F100 company just isn't obvious.