I don't see why you think that a 3rd option is not possible: someone who understands someone's opinion and accepts as a valid choice but has a different opinion.
The issue boils down to opinion and personal preference. As such, it's not a matter of who's "correct".
Clearly there are people in both camps (although I would say that "open source" camp is much bigger than "no-cost but not open source" camp).
There are valid reasons for both options and I don't see why you assume than someone in "open source" camp is utterly incapable of accepting that being in "no-cost but no open source" camp is also a valid choice.
I for one see no point in not releasing the source code if the app is free but if you want to keep your code secret, all the power to you.
The issue boils down to opinion and personal preference. As such, it's not a matter of who's "correct".
Clearly there are people in both camps (although I would say that "open source" camp is much bigger than "no-cost but not open source" camp).
There are valid reasons for both options and I don't see why you assume than someone in "open source" camp is utterly incapable of accepting that being in "no-cost but no open source" camp is also a valid choice.
I for one see no point in not releasing the source code if the app is free but if you want to keep your code secret, all the power to you.