Yes, I know that the Maxis Studio still exists. They only work and develop for Sims series
At that time there were two teams, some work on the Sims, others make games like Spore and Darkspore.
Exactly this Developer team from Spore, which was really specific and no longer exists. The management with Will Wright, Lucy Bradshaw, Thomas Vu, Dan, Guillaume Pierre lead gameplay scripter left the team gradually.
These developers are no longer there. The game is too complicated for many to develop and costs too much money.
Have you ever wondered, why there has been no update or successor to Spore since those days!
EA closed Maxis headquarters in Emeryville, California 2015