Uber, Lyft, Etsy, Doordash, Postmates, Shopify, Spotify, Yelp, Datarade, G2, Capterra, Turo - all are marketplace providers. They don't make a thing. they make the thing that lets a much larger class of thing-makers get in touch with the thing-buyers.
The fervor for marketplace providers has gotten so intense that we're seeing more and more niche businesses get funded, e.g. https://swimply.com/
Edit: ... and don't get me started on how companies (ab)use the 1099 designation to turn traditionally asset-heavy businesses into marketplace providers, generating a lot of paper value while not really innovating in terms of how the service is actually rendered. Looking at you, Arise!