Is this particular instance copying? Yes.
Will it affect the popularity of said designs in a positive manner? Probably.
Will they sell more of their $400 clock (see: http://www.momastore.org/webapp/wcs/stores/servlet/ProductDi...) as a result? I'd guess at yes.
So, in any case, they sell more clocks, or if they litigate and win, they get a license fee out of Apple. So getting copied by Apple has a downside where?