Is that true? Source please
It also depends on what you mean by "controlled by". Large amounts of Bitcoin have been deposited in exchanges where the coin "owners" have no control over the coins. For example Bitfinex stores about 1% of Bitcoins in a single wallet [2]
[1] https://www.zerohedge.com/news/2017-09-19/cryptocurrency-con...
[2] https://bitinfocharts.com/bitcoin/address/3D2oetdNuZUqQHPJmc...
No 94% is not owned by 4% of people. The cold wallets behind major exchanges completely skew those number
And no, 30% of coins are not “lost”. Realistically it’s closer to 5%
Total amount of US currency in circulation = 1.2 T https://www.newyorkfed.org/aboutthefed/fedpoint/fed01.html
Any way you want to figure it, the amount of wealth that exists does not correspond to the amount of currency in circulation. Both can go up and down independently of each other.