Somehow I feel that investing in the business you can manage is better than investing in any other financial products in the world.

It's far more controllable and less dependant on randomness.

There's no free lunch in the world.
No such thing as you put the money inside and see it grow.

It's always about the value you can bring to the world.

As of the case of Warren Buffet, he started up with big money, and his big money created a value for those companies who need it emergently.

That's the reason his portfolio is far more controllable than ours.

So what to do if you have money and don't know where to put the money in and you don't want to run a business?

Seriously, I don't have a good idea at all, but if you diversify the money enough into different products, the growth should be sufficient enough to cover up the depreciation of the money value.

In this world, every grow is associated with risk that you can't see.
It's always a gamble.

No investment product is controllable no matter how the Nobel Prize Winners tell you THEY CAN.

The only way to counter it is with hardwork, and running a business is the only way you can associate investment with hardwork.