By Deepa Seetharaman and Echo Wang ABILENE, Texas/NEW YORK -At the White House this year, OpenAI outlined its lofty "Stargate" infrastructure project that would cost half a trillion dollars and be developed with partners including SoftBank and Oracle. Now, after some fits and starts, OpenAI executives say the joint venture is far more expansive than previously outlined and involves almost everything OpenAI does related to artificial intelligence chips and data centers. Stargate was initially conceived a ...