It's pretty shocking statistic, seeing as you have a better chance of making money in the stock market than affiliate or internet marketing which only has failure rate of 90% the same failer rate for small business's.
Mind you it makes sense if you think about it with just the vast number of people who want want a to join this game everyday. It's understandable most leave with nothing, most of the time worst off than when they first started.
For someone who has made large profits in both the stock market and affiliate marketing space makes me appreciate what I have achieved and at only 20 too, I think some of my success is being around successful people, my best friend who is 21 owns a retail company that turns over around £1m a year has given me some great business advice over the years and I have done the same as we both have our own field of knowledge.
Here's the article: Why There Is A 95nternet Marketing Failure Rate