Investment cannot make you filthy rich, if your last name isn't Buffett

Considering that investment can only make 5-8% on average in the long run, we cannot expect investment to bring home the bacon, can we? Going back to my first blog, an average Singaporean earns S$2k per month, assuming that she can save S$1k every month, which is very optimistic (i.e. S$60k after 5yrs) and she starts to invest after saving S$60k. She earns 8% of S$60k = S$4.8k per yr, which is S$400 per mth. Well not enough to buy a tap for some, enough to eat, pay off some bills for others. Not exactly a huge amt.

So my point is: investment can give you incremental income, if you invest as well as an average investor on Earth. It cannot make you filthy rich. To invest as well as an average investor, you need to put in a lot of work into analysing the stocks or investments you want to buy. Sometimes it might be better for you to teach tuition to primary school kids and earn as much.

If your last name is Buffett, the story turns out to be quite different. You might have made 30% annual return on your investments for the last 40 years and earned US$30bn, which doesn't necessary count as incremental income. Too bad most of us are Lees, or Tans, or Ngs.