There's room for both of your arguments. Industries are different. Industries that work on a workflow of hunting and fulfilling need SEO. People search for a

There's room for both of your arguments. Industries are different. Industries that work on a workflow of hunting and fulfilling need SEO. People search for an item or service that they know exists and grab the top result. Industries that work on a workflow of discoverability and browsing take advantage of social media. You didn't know you wanted that cute dress or household gadget until some listing pushed it into your attention.