Also, how will disclosure work? If I use an image in my Youtube video, do I need to declare that it was taken from Unsplash which was sponsored in a way by Square?
Honestly, I hope it never matters. If we're manipulating consumers, let's do it as obviously as possible. If we're confused about how to tell people we're manipulating them, we've chosen the wrong path.
Also, lots of TV shows do not need to disclose that but on internet everyone has to which IMO is better.