This is a solid post. I agree a subset of fans would move to Cubs or perhaps adopt another team. But I do believe there are a lot like me who like the Sox but that’s about it after how MLB has been run post Fay Vincent.
I agree the faux rivalry North vs. South is a lot of BS, but plays more to the average person that do not follow as closely as fans on message boards.
The only experience I have with something similar to the Sox moving would be family members and old timers I worked with at the racetracks in the 1980s who hated the Bears after they pushed out the Cardinals, and largely adopted Green Bay.
I followed / went to Steeler (at Soldier Field) and Green Bay games in Milwaukee & here, but stopped following the NFL a few decades ago shortly after the Packers stopped playing in Milwaukee. The last game I attended was at the final game Three Rivers Stadium, and only watched last year’s SB, the first since the late 1990s, because I watched out of town with family.
That said, I still hate the Bears and enjoy hearing about their abysmal failures post Lovie. I would take similar pleasure hearing of Sox failures if they left Chicago (even to the suburbs).
It would have been three decades of schadenfreude if Jerry moved to Tampa, because they would be dead last nearly every year, and only make money with a tanking annual payroll. I could see them legitimately contracting the Sox when that was a discussion a few decades ago.
Can you imagine Jerry trying to draw 10,000 in that s%*# stadium and location? Schadenfreude.