App Store has been a >$1B business for at least a decade.
However, the claim made was that Apple only started offering a longer update period after they started calling out service growth. This simply isn't true.
Not to mention the ability of any company to make demands of their suppliers. If Google can demand device makers not use a fork of Android, they can demand suppliers offer support for their products.
Google simply doesn't care, because the customers they care about are the advertisers, not device purchasers.