The problem the Row has, is that the cost of the rent means that they should really be a luxury department store style business and not a niche men's tailors or outfitters.
Huntsman spends millions a year on their bespoke side, I doubt they get that back in with tailoring alone. From what I've heard lately they are now trying to become a lifestyle/ fashion brand.
Some have been bought by rich benefactors who want the cache of owning a slice of British history
Crompton generates quite some traffic for his customers and especially those who sell RTW items or accessories do benefit from it. The bespoke side probably not so much when the price tag tends to be enormous. At least that happened when he promoted Sexton.