Liqudity pool reward vs stake reward

On Ethereum blockchain we dont have stake reward (because of POW) till now, and people puts yours Ether to liquidity pools, or DeFi pools to earn some interest…Its logical…
But on Cardano we have stake reward and on future liquidity pools reward must be higher because if it is smaller nobody will move your ADA in pool…

That will be bring massive move ADA from stake pools to liquidity pools…Who will than validate our transactions :-)) ???