Scenario: Brand.com with multiple product TLDs. Product1.com, product2.com, etc. Ranking is bad. Some keyword cannibalization is clear.
We are considering advising client to merge all of these product sites to their brand.com TLD as subfolders to concentrate their SEO effort.
MY QUESTION: how much is Google`s entity graph mitigating this issue. Is there markup we can use to achieve a sort of "sameas" effect between these productx.com sites and brand.com site?
EDIT: We have organization schema on several of the sites.