Yes, but I would say they have that reach because the leagues they play in are competitive and exciting with a lot of local support *and rivalry*. US sports do not have that. Yes, they’re successful in their own terms. But there aren’t Boston Red Soxs fans trailing across the country in vast numbers to see, say, them play another team. And their global support is zero.
It’s not impossible to think that Liverpool etc would be kicked out of all domestic competitions. What then? Their fanbase in Malaysia might not care. The wools who support them might care a bit more when they’re playing Real Madrid or Porto but no one else and things are ebbing away...the constant abuse and the lack of talent coming through after a while...