A key point is taxation rules need to put in place a priori of significant development/investments or implemented over an extended phase in timeframes of decade

A key point is taxation rules need to put in place a priori of significant development/investments or implemented over an extended phase in timeframes of decades so developers/investors can plan/adapt appropriately. What you don't want to become is city (or county, state or country for that matter) known for changing the rules of the game when its convenient. Investors make what can be transformational improvements to a city. However the payback periods for a building can be on the order of decades (think Salesforce Tower - cost to build $1.1B, Salesforce lease will pay $560M but over 15 years). The developer or investor takes on the risk and will by definition be in the red for the first decade or two (historically a 7% cap rate is expected - which is about a 15 year payback period). And that doesn't even including the planning period before the building gets built. If a city suddenly changes the rules on a populist whim because suddenly the city is popular with the tech industry, future investors will definitely take notice and it will absolutely stifle any future investments in the city.