it's easy to say...
we (faucet owners) have to find the satoshi for claimers...
Not true.
1. If the faucet has high reward or the waiting time is short = More visitors
2. More visitors = The amount of visitors click on ads is many (Depends)
3. Many ads get clicked = High revenue
4. High revenue = Faucet balance will not dry
5. Faucet balance will not dry = Go back to 2