eBay is a fascinating story for their early impact to the commercial internet. It is also fascinating to see how they've fared: it is still around but now it is being eaten up by competitors like Facebook Marketplace in the US, MercadoLibre in Latin America and others.

PayPal is on a somewhat similar trajectory.

The lesson here is to keep your customers happy or someone else will.

Also found it interesting to read about the people and companies who thought eBay wouldn't work for various - good - reasons. You can always make something work!