[jetti]

"The liberal copyright policy wisely chosen by Tim Berners-Lee was an important reason for the WWW's success."

While Berners-Lee may have had a say in the matter, I think the credit goes to CERN for that one as they are the copyright holder:

"The code is not strictly public domain: it is copyright CERN (see copyright notice is in the .tar), but is free to collaborating institutes."

Still, there is no doubting that the liberal licensing helped WWW's success.