Lol, whyrusleeping is one of the core contributors to Filecoin.
Also if the price externally is changing, you could just... reduce the amount of FIL you pay per GB.
So if in t=0, the price of FIL is $1, and I choose to pay 1 FIL for 1 GB, and in t=1 the price of FIL goes to $2, I could just pay 0.5 FIL. Sounds like a miner (whose cost basis denominated in fiat) would be happy to accept either deal if its net profitable.
Also if the price externally is changing, you could just... reduce the amount of FIL you pay per GB.
So if in t=0, the price of FIL is $1, and I choose to pay 1 FIL for 1 GB, and in t=1 the price of FIL goes to $2, I could just pay 0.5 FIL. Sounds like a miner (whose cost basis denominated in fiat) would be happy to accept either deal if its net profitable.