I don't mean to hate on your people's love for eSports, but it's a combination of typical results and stuff like this that are the primary reasons why I will NEVER pay attention to the eSports scene.
If we're being honest here, Asian server teams have won the majority of Worlds Cups. TPA won season 2. Samsung won season 4 or 5, I think. SKT, of course, accounts for three of the championships. That 5/7.
There's a reason for that, and I think that it's largely cultural.
In Southeastern Asia especially (this is strictly a general observation and is NOT meant to enforce any negative stereotypes), eSports is viewed in a much different light than the EU or the Americas. Gaming is a much more central part of their lives, as shown by the popularity of gaming cafés amongst countries in this region. What's more, people are more likely to give recognition to these players for the actual work and effort that goes into making their career choices a reality instead of silently judging them because their line of work doesn't give some sort of tangible contribution to the society of a whole.
I would go further into detail, but I understand that this is a divisive topic and could even be viewed as discriminatory or racist, which is not at all my standpoint. And obviously, yes, not everyone in a specific country or region is going to support pursuing an eSports career. But I can say with a fair amount of confidence, based on personal experiences with individuals from said cultures, that the public support those players receive in their pursuit of mastery over league is leaps and bounds beyond what other regions experience. And that's probably not going to change for a good long while.
TL;DR: I'm legitimately don't understand why anyone holds out hope that any NA team will win worlds any time soon. Our very culture holds them back.