I think you’re vastly underestimating how many and how eagerly the Americans have jumped on the band wagon. They have a huge American fan base who were willing to watch them in the National League and pay for NLTV.
They sold out 25k replica shirts last season and ordered 35k for next season. Most being sold to the states.
Friendlies in America are sold out despite tickets being $200. For an open training session tickets are $85.
They’ve got more followers on social media than some PL clubs.
And they’ve not even peaked in terms of exposure and popularity, they’ve got another season of the documentary coming out soon and a third season already greenlit.
I have my doubts if the Americans will stick around when the going gets tough but for the next couple of seasons they’ll be there.