As the USD price of Bitcoin increases, the rewards that popular Bitcoin faucets payout decreases accordingly. Sites that would pay 50-70 satoshi per claim last year are now paying between 15-20 satoshi per claim.
If the price of Bitcoin continues to climb to $50,000 USD, the value of 1 satoshi would conceivably be higher then these faucets could afford to pay out (per climb) compared to the ad income they generate.
Any thoughts on how will these faucets deal with payouts when 1 satoshi is worth too much?
I think some faucets change to another coin or maybe the user of the faucet has to claim 10 or more times to get 1 satoshi.

1 satoshi is the technical minimum limit of the bitcoin, but a faucet can say that 1 click worths 0,1 satoshi, and you can claim your earnings when you reach 1 satoshi, no problem and most of the people will understand easily. There's no need to switch to another coin, and people will be more happy with 0,1 satoshi per click instead of some alt because they only need to look for the BTC/USD price and don't need to calculate with the alt/BTC exhange rate as well.