How does the Service economy work and trickle down relate to it?

Please could someone ratify or explain something about the service economy, how it works, how it relates to the concept of trickle down?

Something that has plagued my mind since COVID, is how in a service economy, each tier of services seems financed by the services that each tiers target market offers to the tier above. Is this a recognised understanding of service based economies, is this where the concept of trickle down economics comes from?

When you combine this with the idea that was floated that AI "allows wealth access to skill without allowing skill access to wealth", the concept of an inclusive economy outside of the top 1-5% in a fully automated society running on a service economy doesn't exist. This is the reason it has been sticking in my mind.