I might be overthinking this but this is what my little pea brain does this time of morning.
1 - you buy a book with a pattern in it or buy a pattern, and you can't make something with it and sell it? The author of the book or pattern has gotten paid their asking price for this pattern.
Does that mean that a restaurant can buy food ingredients but can't make anything with these ingredients and sell them without asking permission?
No, that is silly! The food companies got what they asked for the product, and the restaurant can do anything with it they want to.
Does this also mean that a baker can buy a cookbook but can't make a cake from a recipe out of the book to sell without getting permission from the cookbook people?
Can a seamstress buy fabric then make an article to sell from this fabric, or does she have to produce her own fabric before she can sell for a profit?
I'm going to shut up now and go back to bed.....even though I could go on and on and on.
Carol B