maybe many rich's are accumulating know ,
and maybe they or a one person already accumulated worth more than combining some biggest whales how we can know if the bitcoin are stored in many many wallets by one person or institution
How or in what way will knowing this help you? You should focus on running your own race to the finish line rather than allow your self to be distracted by how other people are running their own race..
Even if you are able to find out the wallet whales store their bitcoin, whether it be one, two or more wallet, knowing this will not add a single bitcoin to your own wallet, why not focus on accumulating your own bitcoin?
2. Is it possible to invest very very big money like 10's of billions without been tracked by authorities
or is it not possible to earn or invest this amount by illegal business