Annual Football Game is Naturally Short-Lived
Annual games like sports like this are usually short-lived. Every new iteration, the old series will be killed off even though it is only corn. FIFA 21 was unsupported in June 2022, then FIFA 22 was retired in May 2023, a few months after the new series was to be released.
Football games like FIFA will indeed become irrelevant when a new series that has the latest squad with updated statistics makes these sports enthusiasts do not want to see the old game again even though they have donated a lot of money to microtransactions.
The removal of FIFA from the storefront is most likely a step from EA Sports to completely escape the soccer federation which is considered too predatory. With the game no longer for sale, they no longer have to think about game license fees and can fully focus on their new, completely original brand.