There's only so many consumer eyeballs and wallets in the world, it almost seems the supply of products and services is unimaginably over supplied to a fixed demand?Are you of the impression that the demand for, I don't know, B2C cell phone apps is fixed in 2014 to the same value it was in 2007? If you (sensibly) do not agree that the iPhone failed to change the underlying demand for cell phone applications, consider the possibility that we are, in fact, crushingly undersupplied for B2C software. This would counsel people buying positive expected value lottery tickets as soon as the startup founders can print them.
What's in it for a founder when you could go get a job at Amagoobooksoft instead? That's a fair question. One: you will not have to work at Amagoobooksoft for a little while. Two: you may improve your eventual position at Amagoobooksoft by doing a startup versus simply applying to them today. Three: you may invent the next WhatsApp, and end up with several billion dollars in your pocket. Four: for a certain psychograph of developer, there are non-pecuniary advantages to running a startup in a manner similar to their being non-pecuniary advantages to doing the Peace Corps for some people. ("Change the world!") Five: You may, accurately or not, perceive that you are presently not likely to receive an offer at Amagoobooksoft, but accurately perceive that "Nobody can tell me I'm not ready to do a startup" and rationally calculate that this is a better way to build skills and reputational capital than e.g. getting a job at Burger King even if the money is roughly similar.
P.S. The Mobifotosocialgames For White And Asian Geeks space is a small fraction of the total market for software, though you wouldn't know it from "the tech scene."