Market cap is rentable. Our cabinets are born with a real Uniswap v4 pool — no bonding curve, nothing holding the money. Buy to a threshold in a thin pool, graduate, sell back out: the money never stayed anywhere. On 09-04 we measured pools sitting 3,760x from their own market.
Rent cannot be un-paid. It is money that left, permanently. The only way to fake it is to pay it — the attack is the intended behaviour, which is the strongest thing a number can have going for it.
Market cap is still on the plate, because it is the number people look for. It just does not open the door.