Well, the point it kind of the opposite. How do you control a decentralised inflation?
Cryptocoin is successful for the reason that it is not controlled by a single entity and therefore safer for your funds.
Of course bitcoin is infinitely divisible so instead of making more money, you split it into smaller pieces.
This has of course some negative consequences on the value of the coin since it will continue to grow after demand.
That's a really good question.
I am no mathematician but one approach might be not to set an upper limit on the number of coins. Perhaps the difficulty could be dynamically adjusted according to number of transactions per minute and the number of coins in circulation.