North america is all about winners, doesnt matter if they are underdogs, or blatantly awesome, if a sport does not have a wealth of American talent, then it has a tough time with the public.
I....hmmmm. Not sure I agree with you there, although I can see why it looks that way recently. Jackie Stewart and Formula 1 racing were HUGE in the USA, and F1 remained popular, despite a dearth of American talent, until NASCAR ascended.
Tennis has been popular here, despite a strong international champion prescence. Hockey as well. And so on.
That is why the NFL has a world championships involving only american teams, and why soccer is a minority sport - americans are cr4p at it, so nobody cares about the US national team, so they get no investment, and so they stay cr4p.
I am mystified somewhat by soccer/football's relative unpopularity here in the USA, although that is changing. World Cup gets major coverage over here in the past few years, and soccer, as a sport, continues to grow.
But remember, we rejected the metric system, too. We don't like being told what is good for us.
MMA is on a similar upswing, but I agree that a captivating heavyweight match-up would restore much of boxing's luster here. You guys across the pond have had good pickings lately!