Simple matter of their teams modelling up which projects have the greatest potential to drive immediate revenue, while expanding their market size and stickiness of that market.
Their teams MAY determine that the OUT has potential to bring back a lapsed 30-50 year old fan segment (which they'll size), plus add a younger, curious section to their existing base.
They may determine the benefit of the above not worth the added cost of the project (OUT restoration, speed to market, etc).
They may determine that an OUT releases increases customer stickiness and goodwill and will therefore add x% to the Ep 7 and beyond revenue.
But then they might model the effect as negligible and not even worth a PR bounce.
Either way I bet their teams have modelled it - which is exactly what the teams at Lucasfilm will have wanted to do prior to the sale.
The political reason why that didn't happen has gone.