eBay Inc.

Moat drivers and weights: Network effects 40% weight, score 70. Liquidity and unique secondhand/enthusiast inventory attract buyers and sellers, reinforced by advertising tools that improve visibility. Still, sellers can multi‑home to Amazon, Etsy, Poshmark, Mercari or Vinted, so the network effect is real but not impregnable.

Intangible assets 20% weight, score 70. eBay’s brand is synonymous with recommerce and trust features like Authenticity Guarantee across sneakers, handbags, watches, jewelry, trading cards and more strengthen the value proposition.

Switching costs 20% weight, score 45. Tools, reputation, and feedback histories create some friction, but sellers can list elsewhere and buyers can comparison‑shop via search or social.

Cost advantages 10% weight, score 50. The marketplace model scales with relatively low capital, but logistics are mostly partner‑based, limiting structural cost overmatch.

Efficient scale 10% weight, score 55. In high‑value niches (collectibles, luxury, motors parts), reputation and authentication create credible deterrents, but category competitors exist.

Weighted result ≈62/100. Key durability risks include: evolving retail media economics and ad effectiveness, AI‑driven changes to product discovery, and regulatory obligations (EU DSA) that add costs and operational burden.