I can’t remember seeing Satoshi mention the supply cap and future implications much or at all. Do you really think he overlooked this ? It seems like an obvious issue but maybe he thought about it.
UPDATE:
i dug up an old email from satoshi, i think i read this when it was reported long time back but forgot… Vitalik believes supply caps are a flaw - what do you think? - #2 by kowalabearhugs