Because it literally takes their entire studio spending 4-5 years to make a game of their scope. It cannot possibly be done faster without massive compromise. They don't have people sitting idle. They're actively completely working on the project the company is.

Way too much logic with this approach for a game publisher/company to follow. Gotta milk every IP for all its worth, seperatley, to get the biggest cash cow's out of the nothing burgers served.

I mean - they’ve had teams working on Fallout, ESO, and Starfield simultaneously. What work was probably going to be dedicated to ES6 probably got transitioned to ESO or Starfield. They’ve definitely had multiple teams focused on multiple things - ES6 just got deprioritized.