> There are companies doing millions of dollars per day in sales on Shopify or similar platforms To be fair, Shopify takes a huge cut, and retail margins can't

> There are companies doing millions of dollars per day in sales on Shopify or similar platforms To be fair, Shopify takes a huge cut, and retail margins can't afford that. If I were them, I would have also made a homegrown e-commerce CRUD software as well. BUT I would have used Django or Ruby-on-Rails. It would have been finished so much faster. And I'm not sure it would even be much slower than the Node/PHP solution. The reason to make a greenfield solution is to plug in to the rest of your tech. It is easier to make it from scratch than to customize some third party e-commerce software. If you do not have any other software to plug in, and Shopify would actually fully meet your needs, then you should reconsider calling your idea a tech startup.