How does Audiences track profiles for longer than 7 days on Apple/iOS?

Recent updates from Apple/iOS and Chrome/Firefox, limit Klaviyo's tracking ability to only 7 days (therefore only identifying 10-15% of abandoners). If a shopper then comes back after 7 days, Klaviyo has lost the ability to collect signals on that customer, meaning no abandonment signals are collected.

However, with Audiences, Klaviyo will continue to receive user signals and events indefinitely, even after 7 days on Apple/iOS/Firefox/Chrome or when they block/delete browser cache/cookies. This greatly increases the amount of abandonment events that Klaviyo has, resulting in increased abandonment revenue.