Newcastle is owned by the richest person in the world, spending a billion dollars for the team wouldn't even be noticed on his bank account, and yet they are still being careful because they know that if they just spend the money nilly willy, then they are not going to get anything good anyways. Sure City spent a lot too, but not as much as United, and they are doing much better, so it proves that money means something but its not the full thing and we should be considering how to get better result with time and grow the team. United spent a lot, but they got terrible players who worth much less now, they are spending a lot because they are overpaying the players.
But then, Newcastle United has won nothing in the last two seasons and this would be the third season for Eddie Howe. It's weird to see that football fans are not saying nothing about his incompetency despite all of the funds they have spent for the past two seasons. Putting much focus on Manchester United who has won two trophies in the last two seasons cracks me really. Manchester City are on another level. It'll take a whole lot to bring them down. The process of change and growth takes time, Manchester United fanbase are tiring and are without patience, yes they're serial winners from the past, but they should know all good things takes time and most things that last, has a slow start.