This model seems to ignore ideas that could be big if you could find a cheaper distribution strategy other than ads, ie social, virality, etc. It also ignores ideas that don't have demand yet.
By this analysis you guys would have likely killed AirBnb and Dropbox.
This is cool and all, but I encourage you all to just find artists you like and follow them on soundcloud / mixcloud / youtube. There is a ton of great electronic music out there that aids in concentration but is actually fun to listen to. I'm not sure how everyone settled on really slow and droney music being great for programming. I find it pretty boring (no offense to the author).
By this analysis you guys would have likely killed AirBnb and Dropbox.