You are newbie and know nothing yet about bitcoin. Bitcoin addressee is used for making transactions, the addresses can be tracked but it can not be linked to the owner of the owner is making use of bitcoin as a privacy coin without making use of custodial and kyc means of dealing with bitcoin. People like to be private when dealing with bitcoin, so you can not link many bitcoin address to their owner as they are pseudonymous.

But recently, there are many institutions that are buying bitcoin, institutions like grayscale and PayPal.