As the purchasing power of Sats increases I would imagine too that will create downward pressure on the nominal Sat/vb fee market.
So for example say 1 Sat reaches parity with 1 cent. Even with increased demand for block space I think the amount of Sats per tx will be lower or stay flat. A tx that today would be 2000 Sats is .53¢. A 1000 Sat tx at Sat / cent parity would be $10.00 in usd value.
Not sure if it’ll play out like that but seems likely Sats per tx will move down in a high fee environment. Cost of tx in usd / fiat will move up.