“They spent their money on unnecessary overhead, lifestyles-of-the-rich-and-famous activity by the campaign staff and vanity ads way too early,” said Mike Murphy, a veteran Republican consultant who advised John McCain and Jeb Bush and is an outspoken Trump critic. “You could literally have 10 monkeys with flamethrowers go after the money, and they wouldn’t have burned through it as stupidly.”
(https://abcnews.go.com/Business/wireStory/trump-plowed-billion-losing-cash-advantage-73708210)