The main difference between investors and common man is only there mindsets. Investors all time think about how can they make money and common man don't. The common man usually try to spend there income instead of invest it and investors invest in any real estate or other places and make it double or more and enjoy profits.
There is no man that would not think of how to make money in this life, you have to understand that there is still a difference between a common man and a lazy man, we have so many common men that are very hardworking, they can work to get paid, but they just dont have the zeal for investment.
Let us just see it this way that most investors have business drive while a common man does not have business drive, and aside business drive, they dont go or do things that will expose them to investment, but they would rather prefer to sit in that office where they will just be paying them salary at the end of the month, so I think common man too will always think of money, but how to spend the money with them rather than multiplying it is what they are always thinking.