Some facts about Linkedin that make it the perfect product for monetisation:
Distribution of Linkedin users worldwide:

Out of the 830 million users, 39% of them (324 million users) have subscribed to one of the 4 paid plans available on the platform. Linkedin’s MAU is 310 million users on average.
Sample survey with 43 people who use Linkedin paid plans to understand the retention curve.

As observed Linkedin Premium has a smiling retention curve for the period Jan 2022 - Dec 2022. There is a dip in the number of subscribers in the month of March and the curve stabilizes at around 34 users on average. There is again an increase in the number of subscriptions in the period to Oct-Dec 2022, which can be attributed to the global recession.
An average (core/ power) user’s use-time of Linkedin = is 7 minutes 31 seconds per day
🔍Looking at US DAU (High Frequency == using it daily):