Proof of Stake on the other hand was made to address the high energy usage of PoW, which encourages miners to sell their coins. PoS on the other hand encourages miners to hold onto coins; instead of utilizing energy to answer PoW puzzles, a PoS miner is limited to mining the percent of coins in their possession. So, for example, if I only own one apple, I can only pick one apple, if I own two apples, I can pick two apples, which limits my apple picking capabilities and the amount of energy I use picking the apple or the Bitcoin.
