Probably increasing supply to stablize the price over time, so new users will still want to get in, the coins is still useable for everyday transactions.
Thanks for this great post!
First don't forget that the new coin supply is constant while the total stock of currency is growing with the new coin supply. Which means that the rate of new coin supply decrease relative to the total supply overtime.
Simply put the percentage of new coin decrease logarithmically with time relative to the coin supply.
Then this increase in coin is absorbed by some :
1. stakers, who keep their staking rewards to compound their staking power.
2. same for masternode users
3. the budget coin (10%) of the supply can be kept too.
to compare btc supply increase of 12.5 btc every 10 min, 1800 per day. @6000$ it means 10800000$ needs to buy it per day to maintain price.
pivx has 5 pivx every 1 min, 7200 pivx per day @3.5$ it means 25000$ needs to buy it per day, but as you understand that most of the new supply is kept by the stakers and masternoders it means that way less is available each day to buy.
Then don't forget the energy/asics expenditure... pos is way more efficient to run.