1. There are an infinite number of careers that do not currently exist, because their business models do not make sense. I do not think it's a great idea to keep laws on the books, that limit the creativity and rights of hundreds of millions of people, just to keep a few professions afloat.

2. You greatly underestimate the creativity of a capitalistic market. For example, on the web, it's generally difficult and frowned upon to copyright designs. Some patent trolls do it, but most don't. If you make an innovative design for your website, you're bound to be copied. And yet many programmers and tech companies still have viable business models. They simply don't base their entire business model around doing easily-copyable things.