Fiber can be great, as distance/loss is so negligible compared to copper.
What you're describing sounds more like a CATV system than DirecTV. Fiber tends to be limited to under 1 GHz bandwidth, so "they'd" have to do some real work to get all of the DirecTV channels into one fibers. Since they are requiring Motorola DVRs, this too points to cable.
With what I've worked on with fiber, I'd really want to hear from their engineering before I'd believe their "sales" group.
What you're describing sounds more like a CATV system than DirecTV. Fiber tends to be limited to under 1 GHz bandwidth, so "they'd" have to do some real work to get all of the DirecTV channels into one fibers. Since they are requiring Motorola DVRs, this too points to cable.
With what I've worked on with fiber, I'd really want to hear from their engineering before I'd believe their "sales" group.