And somehow it would have been better if the merger wasn’t allowed and Sprint went out of business? Sprint has been losing money and customers for a decade. SoftBank was getting tired of backing them.
Very possibly yes. That would be a chance for additional entities to bid on Sprint's spectrum, or even to break that spectrum up. When irreplaceable assets like that are concentrated into the hands of a few bigger and bigger companies, the whole economy becomes less dynamic.
Who would these additional entities be besides other major carriers - probably the larger two? What smaller entity could afford to build out a network, open retail stores, get customers from the major carriers, etc?