As someone who has no idea what media professionals require or why Photoshop/etc are so good, what makes programs like that so much better? I have occasionally

As someone who has no idea what media professionals require or why Photoshop/etc are so good, what makes programs like that so much better? I have occasionally watched videos of people using Blender or Krita or Gimp or ... Ink(spot?scape?), and they seem to be fine. Though, again, I don't use them professionally in the least bit.