Implement Tiered Commission Structures:

Marketplace operators can enhance revenue by applying different commission rates based on product categories or sales volume. This approach encourages sellers to list more items and scale their offerings, thereby increasing transaction volumes. For instance, offering lower commissions on high-volume, low-margin goods can keep competitive pricing while maintaining profitability.

Introduce Subscription Models:

Charging sellers a recurring fee for premium features such as enhanced listing visibility or analytics tools can generate steady income and improve the platform's value proposition. This model works well in environments where consistent seller activity is crucial, such as B2B marketplaces.

Leverage Affiliate Marketing:

By allowing third parties to promote products on the marketplace and earn commissions on sales, marketplaces can expand their reach without upfront marketing costs. This strategy not only increases the platform's exposure but also drives additional sales through targeted affiliate networks.

Offer Value-Added Services:

Providing services such as logistics support, advertising, or payment processing can be lucrative. These services solve real problems for sellers and can be priced to create additional revenue streams. Amazon's Fulfillment service is a prime example, where handling storage, packaging, and shipping logistics adds immense value for sellers.

By focusing on these strategies, marketplaces can not only enhance their profitability but also create a more supportive environment for their users, ultimately leading to sustained business growth.