I agree - it was the wrong word. One can be successful and never be rich, however, wealth is a property of success, albeit a non-essential one.
That said, I still think most people want money and will take the easiest path to money - if small ideas can get them there then they will gravitate towards implementing those ideas.
Wealth has absolutely no relation to success unless you define being wealthy as your goal. It's not even a consequence of being successful on whatever you set your life goals to.
Further, if your small idea makes you rich you can always funnel later time and success-money into altruistic charities and start ups.