Most streaming services let you download the media to save on bandwidth. My entire music library on Spotify is downloaded so I don't have to worry about connectivity issues. You can do similar things with Netflix.
It's also easier for me to move to different devices, because all I have to do is sign into Spotify. Manually transferring songs like I used to with an iPod is something I don't want to have to go back to.
A quick Google search for cheap/free Photoshop alternatives will usually get people to GIMP in a couple of clicks. Why are you saying that Photoshop users are unaware of any alternatives? It seems logical to me that anyone in the market for this kind of software would be interested in saving some money before shelling out for PS. Am I wrong?
It's also easier for me to move to different devices, because all I have to do is sign into Spotify. Manually transferring songs like I used to with an iPod is something I don't want to have to go back to.