Essentially, it must have a pair on a DEX for an established price. When folks single stake to earn, what they've staked can be bought for market value. The buy is then distributed to everyone based on their pool share (assuming they're opted in), and their quantities staked reduced proportionally. It could be a viable method to allowing folks to incentivize their Pool Parties and reducing AMM sell pressure. The upside of course being that folks would rather buy where it's available and won't have a PI.
For the owner they could toggle this ability on or off.
For the staker, this could be an option they check yes or no to when they deposit (so a separate counter) and also if they don't want to let it go below a certain ratio, that could be a setting too. Like an availability spectrum liquidity pool based on market price per-say.