Yes, Virginia, Din Tai Fung is a chain, with 25 branches in 8 countries. Besides, it comes up on multiple boards, so I don't know where else to post this.
Where have you been to a Din Tai Fung and was the xiaolong bao worth the shouting? What else was good? Have you noticed variations in quality between branches? (There have been some reports of the Arcadia and Singapore locations not being up to the standards of the Taipei branches.) How do they compare with other xiaolong bao venues in the same localities? Were they greatly overpriced for their area?
I've only been to the Shanghai (Xintiandi) branch of DTF, and the XLB there were excellent; of course, one would expect DTF to put their best foot forward on XLB's home turf. They also were grossly overpriced for Shanghai, and at least one local xiaolong bao purveyor (Jia Jia Tang Bao) trumps the XLB at Din Tai Fung, IMHO, at a fraction of the price.