I judge from what I see and empty stadiums don't give me a good vibe about tourney. USA might be a largest market for sports, but cricket is not much famous there. MLC bigger than IPL? No way that happen, passion for cricket in India versus in other nations is no match.
You are also right I will agree with your opinion because if we saw that the Most favourite sports of USA is American football, Basketball, Baseball, Boxing. But in case of cricket it's not that much popular on there and that is the main reason for not seeing the peoples in the stadium ground. Anyway this is their second may after few years they will gain some popularity and have some audience in the field. And in my opinion obviously I think indian cricket league was much bigger than right now.