Cleary, Web content without structured facts gives no clue whatsoever to a computer exactly what the Online page is about. On the other hand, Web content with structured data provides a lot more info and indicating: we can see that it's a Website of some company, which describes some product, https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html