Question!

This might be a stupid question, but do speech writers pretty much give up all rights to claiming the material they write? Starbucks’ coffee collar today has the quote ” And so, my fellow Americans: ask not what your country can do for you-ask what you can do for your country.” - President John F. Kennedy. Inaugural address, January 20, 1961. I mean he didn’t write that, right? But it’s his name on the coffee collar. Explain please.