I don't 'get' Primark Duke but it's an obvious vote of confidence from a major retailer and if that's what the majority want, then that's what they get. Primark and H+M also moved into premises left by an out of date department store and an American style book retailer. If customers didn't engage with those businesses models, it's neither fair nor unfair! There are countless independent shops and businesses thriving throughout the borough and those that fail are often ill conceived or unviable..you seem like a free market kind of guy to me, isn't that just the market at work? You almost seem to be suggesting state protectionism or propping up of failing businesses via artificially low rates?
Re the changes to council tax etc...I wouldn't hold your breath for the Lib Dems to do anything as ridiculous as honour a policy. Of course, if the money lost to 'tax avoidance' schemes by businesses was paid to the exchequer, it could have a real impact on public finances. I fear, if we move to a tax/profit based income stream, we'll end up with 'tax avoidance' specialists, KPMG, Ernst and Young etc, setting up offices on every high street! That may be the answer to the empty office space!
Local authorities are always an easy target if you single out an area of performance but Manchester, which has some of the most deprived wards in the country, seems to be doing well..there's certainly plenty of independent retailers if we are using that as a yardstick!