This is actually really interesting, could you go maybe a bit more in-depth with how their embargos are handled? Embargos are in place with games but they aren't really that strictly enforced. I mean, there's a well-known YouTuber (nearing 1 mil subs) who's literally sharing impressions and screenshots like c'mon...
the beauty market has a very similar release schedule of a constant barrage of high profile reeleases (mostly eyeshadow palettes).
Those products get sent out in advance to a lot of people, mostly influencers nowadays, who make youtube videos and the likes about these products, or post on instagram. Not unlike how a streamer on twitch or youtube operates to be honest.
But part of being relevant and staying relevant as a beauty influencer is bringing out your review as fast as possible to ride that hypewave, just like a reviewer wants to be the first review out that will set the tone.
It is here that you pre-release product comes in hand, as a content creator you need to rely on PR to give you their product in advance so you can be prepared. The beauty community also works with embargoes but they are more ruthless with enforcing them.
Breaking an embargo means you're immediately of the PR list, you won't get products in the future anymore which will fuck up your chances in the long run.
They easily can do the same with game reviewers, as soon as one company starts being more ruthless with withholding review copies others will follow suit and people won't be daring to break embargo's as easily because it can fuck up the relevance of their entire publication or platform.