It takes time to research your market and industry. It takes time to perform the necessary analyses. And it takes time to product quality content. There are issues like helping Google understand the content on your pages and website, incoming links, page authority, domain authority, usage patterns, spam factors, canonical issues and much more. With Google's mobile-first index, mobile web pages are more important than ever. People view web pages on smartphones and it is important that your link can be seen on these devices. Too often, business owners create a decent site, and then forget about it.