What I mean is that occasionally manufacturors do directly or indirectly bribe reviewers and or publishers for coverage, with either favors, cash, or advertising buys.
As for the the question of images, logos, copyright...
Perhaps it's very different in Japan but here, there is something called "fair use," an exception to copyright expressly for use in reviews, criticism and commentary. And the only time you see a logo obscured is because the publisher isn't being paid to display it, not because the publisher hasn't paid to.
Thanks for your help. I'm getting more clear on these issues now.
But actually Japan is sort of very behind all the legal things that we discuss here. It's sort of shockingly lawless in many aspects, and that's even more confusing sometimes.