Exactly. I don't question that notion.
It is the designers who use the same model for their copyright restrictions regardless the fact that the use of the license reproduces their product. They should realize that such a restriction renders their product (the pattern) almost useless.
There are in fact many programs similar to MS Office using the same programming language. You just can't copy the MS Office program and sell it or use more than one copy of it at a time.
I should have said that very clearly:
The notion that a "designer" claims copyrights on Greatgrannie's designs is ridiculous.
It won't stand up in court either.