Here Sarah Bond explains why they felt obliged to shut down Tango Game Works. She says that there is no one criteria they use...
However, since they were giving away HiFiRush for free almost on gamepass it seems unfair to judge them by sales.
Then most other studios, like 343, the Initiative and others have never produced a game with such high scores or awards...
So, I think it's obvious that HiFiRush was too good and was making their other studios look bad, so they had to go.