Another reason is that the medical industry is a sensitive industry, just like the financial industry. When doing seo, the medical industry considers too many things, which leads to the need to be cautious when writing articles and sending external links. Sometimes it takes a lot of manpower and energy, but the final effect is not ideal (especially when there is a big accident, the search engine will manually intervene in the ranking), and even it is better to bid directly, which makes it difficult to do seo in the medical industry.
However, some medical companies feel that medical seo is not difficult to do, so they have been comparing the rankings of other industries, which further leads to the pressure of being a seoer in the medical industry, which is even more psychologically uncomfortable.