The default mind set for a normal person should be there is no reason for them to waste their time to improve a closed source data set for a for profit company. You can break this mind set if you truly care about the product and they are small enough to matter, like a local restaurant or single dev software, but we should not be contributing our time to helping Amazon weed out the complete crap USB cords from the only kinda crap USB cords. Professional organizations like consumer report and America's Test Kitchen can do it at scale and smaller reviewers (who refuse free products) can handle more niche things in the interim.

But I believe open data sets will become as important as open source for the future. Filtering out the spam, fakes and slop will be similar work to what AdBlock filter people do today.