A photographer's job is to take pictures. Am I right? You pay them to perform a
service, the service of taking pictures. Why do the photographers retain the rights to images of me or my child? They then ransom additional copies of those images to you. Images that you have already paid him or her to
take. Some may sell you the rights [to print] (for an additional charge) to those picture, many will not. Wal-mart and many other photo labs require a letter granting you authorization to reprint YOUR photos taken by professional photographers.
Everyone wants pictures of the biggest events of their life, which usually includes their wedding and their children growing up. My wife and I had a photographer at our wedding. The photographer was part of our wedding package. I didn't learn the photography business model until after the wedding. You can pick out a few pictures as part of your photo package. If you want additional copies of those pictures or prints of any of the other pictures taken, you must order them from the photographer. Most wedding photographers will refuse to sell you the negatives until at least a year after the wedding. Baby photographers have a similar model, but most will sell you the negatives or digitals when you purchase their premium-est of packages. For this reason, my wife and I have mainly avoided baby pictures taken by professional photographers.
Admittedly, this type of arrangement may have made since before
digital photography and before you could have film developed at the grocery store. Unless you had your own dark room to develop film,
the photographer was the obvious and often only choice to obtain copies of your
pictures. Holding on to the negatives/originals just facilitated things. Film costs money, so does photo paper and the chemicals used to develop film and make
prints. However, with digital, there is no film. The cost
of storage for each pictures if marginally zero. Anyone can take
their pictures to FotoMat (just kidding, there hasn't been a FotoMat booth in probably two decades) or have them printed from online. This is even if one wants actual prints instead of just the digitals, which can be posted and
shared on Facebook or other social media sites or placed in digital picture
frames.
I have a programming background. If you're hired for a
contract job or have a long term employer, whatever you produce while on that job, including the intellectual property (IP) rights, belongs to the company that paid you. You were paid to
perform a service (creating a program or code). You don't own it, the employer does. If you use a Realtor to find a house, she doesn't get to maintain possession of the house and charge you rent to live there. She was paid for the service of finding you a house only.

