You do not understand the basics of Bitcoin/bitcoin.
The miner's fee can be adjusted in the future, to equal the new appropriate miners fee.
The decimal is not fixed, but adjustable, if and when needed.
For example, if 1BTC is equal to $1,000,000 USD (we all wish),
then the miners fee will be adjusted to around 0.0000001 BTC or 10 Satoshis.