It's worth throwing in a caveat. As your channel grows, you may get to the size where game companies begin to send you press kits. These are "supposed" to be fine for upload and monetization, but in some cases still get flagged in ContentID. That said, if you've been given it and the content gets flagged, you've got a pretty reasonable case for dispute.
Outside of that, no, you would just be uploading content without permission.