£300m over 5 years isn’t much in football these days. Championship clubs spend that in a similar time period. We’ve spent about £80m in that time and have been cutting costs for years.
City are the 4th highest spending team in the last 5 years. Inter are the 12th highest.
Inter Milan are hardly the plucky rebels against the evil Death Star. They’re a Chinese state backed club that spend hundreds of millions. Over £1B in the last decade.
Football has been about money for decades, just because it annoys you doesn’t change that.