There was nothing to be "taken". Liquidity providers on Uniswap are market makers. They are (automatically) buying and selling tokens, and receiving a fee for their service.
Anyone can create a liquidity pool of any pair, as they see fit. It does not require any "prior" input. There is no staking, no dividend or interest of any type.
The profit comes solely from the fees, and the profitability of the pool does not depend on how many people "get in" or "get out", it depends solely on how many people are willing to swap token A for token B. The more people transacting, the more fees are generated.
You started this thread with some completely wise-sounding quip, but each of your responses are showing that you have absolutely no idea of how things actually work on decentralized exchanges, and that all you have are blank statements and preconceived notions about crypto.
The only question is who gets there first.