Your statement confuses me. Where did all the existing businesses come from if 'people' did not start them in first place? The costs of starting a new business might be dropping considerably, but this hardly the first time in history that entrepreneurs were being so greatly rewarded.
Might be worth pointing out that before the rise of manufacturing in large scale with assembly lines &c casual work was normal. Not much in the way of benefits or security.
Compared to older times it has become easier to startup(especially internet and mobile) because of maturity and agility of technologies, a huge rush in incubators like ycombinator. Also guys outside the silicon valley can look forward to more probability of success than before as the investor and hacker networks are slowly building up.
