Is there any reason to believe 99.9% of the “purchases” are not just fake self-dealing? Is there actually $4B USD equivalent tied up in Ethereum escrow somewhe

Is there any reason to believe 99.9% of the “purchases” are not just fake self-dealing? Is there actually $4B USD equivalent tied up in Ethereum escrow somewhere, proof of stake style, or can the issuer not just “buy” their own tokens, tumble the “proceeds” for a bit, and “buy” some more?