I have seen patterns for craft items that say they don't want you making items from the pattern to sell commercially. And I have seen videos of people making things and they don't care if you make items to sell like their pattern. Most quilting patterns are very simple. I personally would make up my own designs to sell if I were going to do that but I don't really have an interest in that as there are so many people doing that already. Most of the time when I am walking around flea markets & craft shows I consider whether I like something or not more than I think to ask them where they got their design from and if they are copying someone else. I am not the craft police. If you design something and don't want people to copy it then it is up to you to do something about it, not me.