That meant that Americans couldn't just add a DTV tuner to their analog sets - they'd have to throw away their TVs and buy high-def ones.
No one wanted to do this, in part because none of the broadcasters were willing to create high-def content (why would they, when everyone had standard-def TVs?). Advertisers weren't willing to pay to produce high-def commercials, because broadcasters weren't broadcasting in high-def, and viewers weren't watching in high-def. It was a total vapor-lock.
4/
To make all this worse, broadcast TV viewers skew older and more rural: that is, they are more likely to vote, *and* their votes carry more weight thanks to antimajoritarian institutions like the Electoral College. This is a constituency no politician could afford to antagonize.
But wait, there's more! US spectrum policy bans TV broadcasters from scrambling their signals.
5/