I spoke earlier in the season about what a mistake it was for the writers to ditch Carrington-Atlantic. Having a multi-generational company to fight over gives those fights a lot more "teeth," since most viewers can relate to a family wanting to honor their ancestors' hard work by keeping the family company strong and growing. The ease with which the family sold off the company (no scenes of Fallon feeling like a failure, nothing of Blake feeling he let his father down, no pangs of nostalgia whatsoever) didn't feel right. I thought at the time of the sale that it was just a plot point, that they would somehow regain control of their "dynasty" within a few months. Instead, Blake gets into something totally different, and Fallon has been adrift. Adam ought to be secretly angry at them for letting the company slip through their fingers, since his stated plan to "take what is his" seems like a lot less to take than it would have been a year ago at this time.
I think perhaps the writers simply lost interest in the energy business as a background. It would stand to reason/logic (shut up!) that even if Blake lost C-A to the Van Kirks, he would have gone out and tried to start another energy-centered business since...well, that's the only work he's ever been involved with. His attitude ought to have been "Well, we lost the family business...so I'm going to build another one just like it with my bare hands, and I want Fallon to be by my side while we do it." Trade one dynasty for a new one, and take the viewer along for the ride as he does it. Right now he's just enjoying being rich, playing around with a soccer franchise...but not building anything to leave the family when he kicks the bucket (the way his father did). For all the faults they found in OG Cristal, at least she inspired Blake's ambition and encouraged him to wheel-and-deal to his heart's content.