It is an art, and you do not reward those who are good at it by copying not just their ideas but their actual works.
I agree, as a developer who does not have much talent for design, that it would be a 'better' world for me if I could just grab the html from places that do have that talent and not suffer for it.
It is hard in an area where you dont have much to offer, to accept that you do not have a right to take from those who do, but accepting that and learning to work within those constraints will make you both a better person and a better developer.
The interesting thing about designers is that on the whole, they have less of a choice. Everything that they do is out in the open and - if they do their job well - lots of people see it and want to copy it.
In an open world, we could all be making derivative works of awesome works and advance the state of the art, rather than having to duplicate it first, before advancing it.