A closed-minded public broadcasting system

Sandra Day O'Connor was quoted in the article "PBS Discriminates Against Alternative Views" saying:

We're likely to experience more restrictions on our personal freedom than has ever been the case in our country.

This must be because the Internet is expanding which scares big businesses.

Because 75 percent of public broadcast funding comes from the public — corporations are the single largest source of underwriting for programs — the way PBS broadcasts is largely dependent on what corporations want.

Former "NewsHour co-host Robert MacNeil said, "We [at PBS] are not as provocative, innovative, creative or original as we should be."

But shouldn't public broadcasting be for the public? And shouldn't any program be provocative, thought-provoking and creative? If not, why show it?