Pretty off-topic, but yes, domains and land are often bought via shell companies for this reason. They probably didn't settle upon the name Sora until they already secured the .com . That's a famous YC piece of advice. If you can't get the .com then rename. But for domains that everyone wants, like chat.com, OpenAI paid 8 figures for that one.
Huh didn't realize chat.com redirected to chatgpt