Proprietary software grew up, starting really in the 1980s, as an alternative and that became the dominant model with the rise of companies like Microsoft and Oracle and the like.

I believe that the human motive to share is very powerful. The human motive to profit is also very powerful, and I think that the profit motive and the sharing motive are not exclusive.

A lot of the websites built through the 1990s used Perl. The first webmaster of Sun Microsystems coined a wonderful phrase. He said Perl is the duck tape of the Internet - it's this language that people would write all these scripts that make things just work.

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