I believe JKR has half the say on how and where the IP can and would be licensed, as she owns the characters themselves. So, even if Comcast were to purchase WB, they would still require her approval for park additions.Assuming Universal buys WB, which if they did would likely be well before this park breaks ground (negotiations would start in April 2024 at the earliest) this would become moot and they could move full steam ahead with Potter. With talks of Potter being rebooted on Max, It's entirely possible that any Potter land could be radically different than any of the current lands at Universal. Epic Universe included.