Buffett's investment philosophy has always been predicated on a "Value Investing" approach!
That is, buy good solid stocks (blue chip) that consistently grow earnings (profits) and pay dividends and lock them away! Unfortunately this approach requires investor discipline (need to commit to a very long term investment horizon) and it requires a lot of upfront capital to get you very rich.
It is an old timers approach to investing, and a great approach to investing...However, it will not make you rich in the long run unless you start with a big sum of capital and continue to contribute additional capital on a regular basis, and make sacrifices (forego other expenses such as expensive cars, SPs, etc). Some investors will cash in and pay for personal expenses (mortgage, credit card debt, private schooling for kids, university, etc.) or invest the proceeds from the gains in the stock markets in real estate.
It is an investment approach which has always worked well and will keep you in the "Upper Middle Class"!
In today's investment environment you have to take more risks to make it big...and prices of risky stocks (US high tech stocks) make very large moves in very short time periods. (i.e.: short time investment horizon).
Basically, you need to hit home runs to make it "very rich"...and not singles and doubles to just live well!