Well, I don't think it makes any difference whether you think you would mind if someone did something similar with some product of yours. What really matters is that you treat others as you would like to be treated. If you had something you had put effort into and didn't want others to steal the idea, you would understand. Even if you have never been in that position, you should act as though you had and try to understand their feelings.
I'm not saying there's no gray area; in general, though, it's a good idea to have respect for the time and effort that others put into developing an idea, whether or not it can easily be duplicated.
I'm not saying there's no gray area; in general, though, it's a good idea to have respect for the time and effort that others put into developing an idea, whether or not it can easily be duplicated.