Don't under-estimate education
On of the other items being evaluated is the public education policy. I think this is going to get a very cool reception from the BDU's because they are not going to want to educate the public about an alternative to paying the monthly cable/sat bill, but it's going to be important.
The father of a friend of mine had a CECB box for about a year and didn't want to attempt to hook it up as a result had been missing all the American channels (only had Toronto analogues). When my friend finally was over and hooked it up they were happy they could finally get back their lost channels. In the American education campaign they made a point of asking the public to help out their friends and neighbours who were not capable of figuring out the CECB's so they didn't just go dark after the transition. That style of education will be critical to a successful transition.
Pretty much all of us on this forum don't have issues tinkering around with any tv system, but there is a large portion of the public that gets overwhelmed with this type of technical stuff and will need time to get the equipment and get it hooked up.