Politico's Bloomberg knocks Trump back on his heels in Florida includes:
“It’s forced the Trump campaign to retrench in Florida. You can see it in the spending habits, in television and digital. They’re investing more at the expense of places they need to win,” said Steve Schale, who leads the pro-Biden Unite the Country super PAC.
“Basically, Trump has now been committed to the equivalent of land war in Asia by having to spend so much of his money in Florida, a state he has to win to get to 270 Electoral College votes,” Schale said. “And as a result, he doesn’t have the resources to compete everywhere he would like.”
Explanations for what "a land war in Asia" can mean are found in answers to Meaning of “Never get involved in a land war in Asia” in The Princess Bride?
Question: But how does the analogy apply to the 2020 US presidential campaigns? Is it simply that resources are spread thinly and whomever can spend the most wins? Or is there more here in this analogy about strategy and/or tactics?