I was researching this one industry and noticed something amazing on Google. As an example type in "perennial plants"
Now scroll down and see how Google gives out in essence free ads that look somewhat like product ads. Home Depot shows up then their competitors one by one. Rows and rows of images. Click on the 3 vertical dots next to each category of images that relate to perennial plants for each company. Google states these are not ads when clicking on the 3 vertical dots.
It seems to me Google should be charging for these but are not. What's even more amazing I saw other categories also show up on Google's first page. So a company could have 10 plus categories all showing on Google's first page for each respective category. I personally verified this is the case in the industry I was researching. Wow!