It's possible that away from the general outrage, the government looks at the VAT, PAYE, NIC and business rates that Starbucks generate and figure it's not in their interests to make things difficult. Taxation of corporations is a balancing act for Governments.
I've heard them make this point....but if you closed their coffee shop, almost certainly another operator (knowing a coffee/cafe operation works at this location) would take over, paying a similar amount of VAT, PAYE,NIC, business rates etc?....and probably some corporation tax ;-)