Not only that, with less coins sitting on exchanges, the price would also be higher.
My coins left Yobit long ago. Earning interest is refreshing!
https://chainz.cryptoid.info/pnd/#!network
On checking this block explorer, I see only 15% of coins are staking. The rest I assume are on exchanges, off-line wallets or have been forgotten about or lost by their owners.
3% intrest a year is not too much to bother with staking or downloading the qt wallet with all blockchain for hours.
My last audit of the chain had 17+ billion coins which had not been moved or staked in last 500 days just within the top 1000 addresses. I would assume that most of these have been permanently lost.
On a side note, Stake weight caps at 30 days. The 3% interest continues to stack indefinitely. My coins had sat untouched for 700 days without logging in and they staked for the full 3% that I would have gained if I had been logged in once every month to stake. All that you will lose out on is gains from compounded interest (minor as long as you stake once every year).