As a former DiSH (and not dtv) dealer, my recollection as far as history is of a twisted road. We were of course very used to combining off-air locals with c-band, and that continued into DiSH, but now we're putting more systems into homes that had cable and maybe no offair, and DiSH had helpfully put up sets of net affils from NY & LA, that any customer could have for their customary $5 extra fee. Many loved this even if they also got their locals offair fine, both for time-shifting (pre-dvr) and for seeing content from other regions. Soon they added more nat'lly-available "locals" choices, such as from Chicago, Denver, Atlanta, San Francisco.
But then as DiSH rapidly grew, the NAB (all of the local net-affiliated broadcasters) went ape. Their membership contractually owned all of the eyeballs in each of their DMA's for net content, and DiSH sending them that content from any other source, free of course from their local commercials, not only could cost them in revenues, but were liable to be sued to put a stop to it. DiSH countered by claiming that many of its customers couldn't get a good offair signal. The locals countered that by demanding no distant nets activations for homes within their "grade B contour" for estimated offair receivability. Dish responded to that by making available to dealers a "reference antenna" and meter for verifying actual signal levels onsite. All the dealer had to do was to have purchased the kit and to then tell DiSH at activation that the customer didn't have good signal, and they'd turn on distant nets.
Well, dealers just used the signal testing as a pretext (lied about no signal) to get customers the distants they wanted, and many probably never even got the testing antenna out of the box, as DiSH of course knew. So this went on awhile until the net affils got wise again, and so they sued DiSH for infringement, and Dish ended up having to shut off millions of customers' distant nets. This set off a flurry of customer "moves" to so-called "white areas" beyond grade B contours that would still be eligible for distants. We would be sure to keep their "real" address on their accounts as their "mailing" address, so they would still receive bills, etc. Again DiSH certainly knew what was going on. I would just find a remote area such as the northern tip of MN and do an address lookup, and pick one for the customer.
Then I came to find out that most of my customers were being visited by DiSH monkeys without my knowledge and having their nice small dish changed out for a much larger "Superdish" that could receive lower-power Ku from transponders they had hurriedly leased to start doing "local into local", putting up locals from more and more markets. Then because of all their "misbehavior" they ended up getting ordered not to offer distants at all, even into white areas, while DTV still could.
Then the locals started putting the arm on providers for ever-soaring retrans fees, and that history has been playing out over the last several years.
Last I knew DiSH could be kind of touchy about doing requested moves with the desire to keep the mailing address the same, saying the customer must get an RV exemption, etc.
What a mess it all was. For me, anyway...I got out.