I tell people about WooCommerce all the time. When I explain to them how easy it can be to set up your own online store and start selling, they will often look quizzically at me, and say “That sounds great, but I don’t have a product to sell.”
Here’s the thing. They do have a product, they’re just not aware of it yet. They have one, you have one, almost everybody does. And that product is knowledge.