There are commercials?
If you have a DVR you don't need to watch commercials. But the gov't has really mishandled the whole DTV transition. (Big surprise, there.) Not just the coupons. Why do they need to expire in 90 days? Oh, yeah, because they din't provide enough money in the program, so they WANT them to go unredeemed so they can reissue them to someone else. Except they also didn't fund the administrative overhead to send them out more than once.
One could order a coupon begining Jan. 1, 2008, and a great many people did so (myself included) to ensure they didn't run out. But the selection of converter boxes available within 90 days of issuance was pathetic. This is why many (most?) expired unused.
Oh, BTW AC of 16:47, the boxes DO NOT cost exactly the same as the coupon. They are mostly $20 to $50 more (plus S&H and/or tax), although a very few are $10 or less above the coupon price.
I have satellite TV, but I still bought several boxes for myself, in case the dish goes out for one reason or another, and I want to watch something on one of my several analog sets, and I also needed to check them out for my mother-in-law-to-be who relies entirely on rabbit ears.
Then there was the fact that the FCC didn't require TVs to have digital tuners until 2007. So there were people buying a product that normally lasts 10-20 years, but was going to be essentially worthless in less than two. Do you think the PFY in BB or CC who sold it knew or cared? He just wanted the sale.
This whole delay is more of a CYA measure than anything. Stations are going to switch as soon as they can because it costs them money to simulcast. Lazy procrastinators are still not going to be ready, no matter how long they delay it, but now Congress can say we gave you more time, it's not our fault the stations are greedy money-grubbers.