Your calculation is hugely false, Cardona's niche is the so called "broad money" supply which is currently capped at 80T USD, considering ADA's maximum supply and if it succeed to go main stream it can top up to about 1700 USD per token not 1 USD. You may argue that this estimate is quite optimistic, so let say we halve it (50% market saturation) for a much conservative approach, still it could be worth 850 USD....