That's a pretty decent opening gambit; perhaps you can reference your source for this clearly well researched and obviously factual statement.......

As said I don't think we/the cops should do nothing, I can however fully understand why a decision has been made to not engage in a chase in a built up area.

As I posted above but you seem to have accidentally omitted from your quotes I would instead suggest using the helicopter to ensure that the TWOC'ers cannot escape and can then be brought to a stop in a safer environment, which is also more likely to be successful when using the element of surprise if they are not running from the blues & twos.