It's what the baseball Yankees have been doing for over 100 years.
It's really not. The salary cap (both a ceiling and a floor) prevents the kind of inequities you see in baseball.
DHop has 15 catches on 21 targets through 6 games this season on a bad Titans team. Before the season began he was playing through a damaged MCL.
He's not the player he was 3-4 years ago that people are imagining the Chiefs are getting.