Invest money or cryptocurrency?
Don't get me wrong if I understand your question literally. But there's no such websites for esports that allows you to invest but you can gamble and bet for your favorite teams through an esports betting with a crypto bookie.
I doubt that gambling can be called an investment. This is hardly what the topic the author was looking for.
On the topic: It is unlikely that such sites even exist, in my opinion.
As I've mentioned, there's no one that does exists.
And that's why I'm asking maybe he just misused the term investment and probably looking to gamble with esports to crypto bookies that support esports games.
