Whereas lines of competition are clearly defined in the more established industries, in the internet industry they are blurred and indistinct, as companies that compete one day may be partners the next.

a. whereas lines of competition are clearly defined in the more established industries, in the internet industry they are blurred and indistinct, as companies that compete
b. although the lines of competition are clearly defined in industries that are more established, they are blurred and indistinct in the internet industry, as competing companies
c. the lines of competition are clearly defined in the more established industries, unlike the internet where they are blurred and indistinct, as companies that compete
d. unlike more established industries, where the lines of competition are clearly defined, they are burred and indistinct in the internet industry, as companies that compete