your absolute chance of becoming a millionaire isn't 2/3. 2/3 millionaires are entrepreneurs. The entrepreneurial route to millions is at least double that of the non-entrepreneurial route (assuming there are no more entrepreneurs than there are non-entrepreneurs -- a reasonable assumption)...in the example game given at the post, the non-entrepreneurial route is assigned the chance of 1/3 (assuming 1 out 3 non-entrepreneurs are millionaires -- not so reasonable assumption)...so 2/3 is at least double of 1/3.

To be clear, if there are 30 millionaires and 3K non-entrepreneurs and 3K entrepreneurs, the entrepreneurial route obviously wouldn't be 2/3, but it will be double that of the non-entrepreneurial route.

Excuse the confusion.