I think it's that a GNU Free™ lunch is not free in the financial
sense, but if you sell someone lunch, you must also give them the
means to recreate the lunch, and to sell it to other people.  I've
coined the term GNU Recipe™ to cover this.

You can, of course, sell the lunch for outrageous sums.  The lunch
need not be any good either.  But it is Free™.

Yours in horrible anticipation of serious replies to this,

Nigel