I do not have any of my own family history uploaded to any of those commercial websites, however the wife of one of my first cousins uploaded her research and photos from her wedding, including ones with her flowergirls (one was her youngest sister, one was her mum's god-daughter, one was my cousins youngest sister and one was me - so two from bride's family, and two from groom's family). The ceremony was pre 1955, in New South Wales, Australia. Several years ago one of those flowergirls from the bride's family became interested in family history and joined Ancestry where she discovered the photo. She contacted the tree owner who apparently claimed ownership of the uploaded tree, photos, information, citations 'everything'... and that she had no need to ask permission of anyone in any of those photos because of Australian law on photos and pre 1955 and she declined to remove the photo and rudely told her relative 'where to get off' ....
Longer story followed, short version here:
Ancestry did not take photo down despite a legal eagle writing a letter asking for that and noting that most of those in the photo were still very much living, alert people.
The tree owner has taken photo down BECAUSE her own adult children and grandchildren TOLD HER TO. And her husband apologised to everyone at a recent family reunion.
So yes, I can confirm that the historical T & Cs from Ancestry effectively gave them control of anything the subscriber uploaded.
JM
Has Ancestry recently changed hands ... or is that still in the near future?