Yankees' attendance was embarrassing during the Steve Sax-Roberto Kelly-Wayne Tolleson years. My friends and I sometimes went to Yankee Stadium spur-of-the-moment after work, knowing there would be plenty of excellent seats available. Those teams typically drew less than two million. Not much of a loyal fan base. The Mets have been even worse, having drawn three million just six times in their history.
The Angels also draw well in Southern California, having surpassed 3 million for 16 consecutive years despite seldom contending. Overall, Dodgers-Angels combined attendance always beat Yankees-Mets. This despite there being far more to do in Los Angeles than in New York. When it comes to being arts and entertainment-friendly, New York is as bad as a big city gets (and getting worse). Music venues continue to shut down with nothing replacing them. Good reason to spend a night in NYC? I can't think of any.