Lisk inflation is decreasing, not different from eth on that question. Eth is going to change the engine on a running car, big challenge too.
Whats the LISK inflation now? How much is the inflation decreasing per day? Does the delegates always forge 410 coins each day?
https://docs.lisk.io/docs/faq-network#section-what-is-the-annual-inflation-rate-What is the annual inflation rate?
The initial distribution during the ICO was 100,000,000 LSK. Since the network went live May 24th, 101 delegates secure the Lisk network and receive forging rewards for this. With every new block created, 5 new LSK will be added to the supply. Every 3,000,000 blocks (~1 year) this reward is reduced by 1 LSK, ending at 1 LSK per block where it stays like that forever. The forging rewards are equally distributed among all 101 delegates. On top of this, delegates receive transaction fees according to the transactions that were made in the specific block they forged. By implementing this mechanism, Lisk creates an incentive to run a delegate and secure the network, an essential part of our consensus algorithm.
First block with reward is 1451520, 2016/11/30 23:38:00
So, as I understand, about 1 month to reward decreasing.