The idea is to take advantage of compound interest. The driving force behind investments, it dictates that any interest earned accrues interest on itself, so a little money invested now can end up being more than a lot of money invested later. In short: If you want to become a millionaire, the earlier you start investing, the better.
Cuban's point also gets at the heart of the concept many Americans miss: how to effectively build wealth. When a new survey by Bankrate.com asked more than 1,000 Americans what they consider the best way to invest money they won't need for 10 or more years, the most popular answer, chosen by 28 percent of respondents, was to use it to buy real estate. Zero-risk cash investments, such as high-yield savings accounts, came in second with 23 percent of respondents.
Investing in the stock market took third place, with just 17 percent of respondents.