I can't see Sky wanting to be the whipping boys for everyone's faults
Sky's holy grail has been to get rid of the dependence of their business on satellites.
They are expensive and the risks are off the scale in terms of what most businesses would consider reasonable. Couple of weeks ago - imagine one of those rocks hit a couple of satellites. Your multi-billion TV business just died unless you can rent capacity and potentially get people out to re-align every dish.
That is plan A, B & C for Sky and they'll do what it takes to make that happen.
Frankly I think in the long-term Openreach will have to be floated off as a totally seperate company/entity with the government having a "golden share".
Chinese walls only go so far and its not credible that ANY major teleco is going to have control of national network engineering resources and not exploit that in some way.