Good as ED is, the truth is creative management sims is really what Frontier excels at. PlanCo was a major success for them and PlanCo 2 shows early promise it will be a landmark in the genre. The reality is, not sure anyone is choosing anything over anything. Frontier has committed to releasing a major title each year for the next three years beginning with PlanCo 2, which tells me they're more than capable of handling simultaneous projects.
ED is old. We were told long ago they wanted to support it for 10 years, and they've made good on that. The game is now winding down into whatever its existence will be post-Ascendancy, whether it be some kind of maintenance mode or eventual terminus, a few more years of content, whatever the revenue stream dictates.