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IronGopher
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Your conditions, as you have noted but not quite grasped, are self-defeating.

Suppose that the license you desire exists, and you create a picture "A" and release it under that license. Suppose then that Person B makes a change, for example, drawing a mustache into the picture. Let's call this picture "B". Because the picture is a derivative work, by your hypothetical license Person B can distribute it commercially. Suppose that through their distribution Person C obtains a copy of picture B. Person C, due to their right to create derivative works, removes the stingraymustache from the picture. Now Person C has a picture that is equivalent to A, but has the right to distribute it commercially.

You must either grant commercial use to all, deny commercial use to all, or write your own license that specifies that if a derivative work is equivalent to A it may not be distributed commercially.

(Adapted from the FSF's GPL FAQ)

Your conditions, as you have noted but not quite grasped, are self-defeating.

Suppose that the license you desire exists, and you create a picture "A" and release it under that license. Suppose then that Person B makes a change, for example, drawing a mustache into the picture. Let's call this picture "B". Because the picture is a derivative work, by your hypothetical license Person B can distribute it commercially. Suppose that through their distribution Person C obtains a copy of picture B. Person C, due to their right to create derivative works, removes the stingray from the picture. Now Person C has a picture that is equivalent to A, but has the right to distribute it commercially.

You must either grant commercial use to all, deny commercial use to all, or write your own license that specifies that if a derivative work is equivalent to A it may not be distributed commercially.

(Adapted from the FSF's GPL FAQ)

Your conditions, as you have noted but not quite grasped, are self-defeating.

Suppose that the license you desire exists, and you create a picture "A" and release it under that license. Suppose then that Person B makes a change, for example, drawing a mustache into the picture. Let's call this picture "B". Because the picture is a derivative work, by your hypothetical license Person B can distribute it commercially. Suppose that through their distribution Person C obtains a copy of picture B. Person C, due to their right to create derivative works, removes the mustache from the picture. Now Person C has a picture that is equivalent to A, but has the right to distribute it commercially.

You must either grant commercial use to all, deny commercial use to all, or write your own license that specifies that if a derivative work is equivalent to A it may not be distributed commercially.

(Adapted from the FSF's GPL FAQ)

Source Link
IronGopher
  • 563
  • 2
  • 10

Your conditions, as you have noted but not quite grasped, are self-defeating.

Suppose that the license you desire exists, and you create a picture "A" and release it under that license. Suppose then that Person B makes a change, for example, drawing a mustache into the picture. Let's call this picture "B". Because the picture is a derivative work, by your hypothetical license Person B can distribute it commercially. Suppose that through their distribution Person C obtains a copy of picture B. Person C, due to their right to create derivative works, removes the stingray from the picture. Now Person C has a picture that is equivalent to A, but has the right to distribute it commercially.

You must either grant commercial use to all, deny commercial use to all, or write your own license that specifies that if a derivative work is equivalent to A it may not be distributed commercially.

(Adapted from the FSF's GPL FAQ)