I used to work for MiceAge, Mouse Planet, Jim Hill Media and similar websites providing photos and written articles.
I also was a news stringer, and had articles and photos used by AP among others.
I had articles written for Airline Magazines.
I was one of the first persons to do inside photos, which covered construction and other things going on in the parks. Started in the 1990's
I had a Press Credential that allowed me access to multiple Theme Parks and similar attractions.
I was an invited Media guest by The Disneyland Resort.
I had some of my photos used by Six Flags.
I sold photos, made money in paychecks from sites, or got a share of the ad revenue, or paid per article.
I worked with Tim O'Day to help change the media policy at the DLR, from not even recognizing Social "media" to slowly accepting selected members of Social Media by showing a profitable business (true reporter) to the amount of views you got. Policies such as having a limited amount of credentials per site, to setting up different levels based on how serious a site was run.
So yes, I understood what you meant, and I can tell you the rules of the use of photos when taken "casually" in the park to share with friends, as compared to photos you can sell professionally, the rules of needing a media escort, and when you can't use photos from being on property and needing to taking them from viewpoint off property.
And I can tell you right now,
IF Disney (and other parks) wanted to, they could ban persons from taking photos on private property if they made any profit on them.
Here it is from the Park Rules page.
https://disneyland.disney.go.com/park-rules/
PROHIBITED ACTIVITIES
>>f. Photography, videotaping, or recording of any kind for commercial purposes.<<
So guests can share their photos and videos with their friends, so long as their is no sort of revenue made from them.
Once money is made from a photo/video, you are commercial, and Disney can sue for Damages and require you to take them image off the internet.
When you get a press credential you agree to how the photos can be used, usually limited to promoting the event featured, and in a positive light, and an ending date.
Heck, in some of my articles, I couldn't use my own photos, but had to use photos supplied by the park. (Ones they feel show the park in the best way).
Sometimes I used photos of non-Disney things to get around those rules.
I had my Disney credential taken away for a couple of months due to the fact Disney "felt" I did not present an event in the best light. And I can tell you of others, including a OC Register photographer, multiple LA Times writers, and multiple social media photographers.
The OC Register reporter actually started a club for Banned Disney Media, basically a casual bar night every few months, where we blew of steam from how Disney frustrated us.
So Disney clearly can do it, and why I asked the question early in this thread.
And my Smugmug account became my non-commercial photo site to get around the rules, allowing me to post photos I couldn't use elsewhere.