For a big tech brand that caters to shareholders, any product that fails to make an immediate impact and grab a huge market share is a “failure” worth killing without mercy. By these criteria, the Amazon Halo brand of fitness trackers was doomed. Skip the infamous ever-listening band Halo and Halo View, a Fitbit lookalike. Amazon has a reputation for being cheap, and its loyal customers have brushed off privacy concerns for years. Future Halos could have iterated and improved on their flimsy, janky origin. You can’t ignore the fact that Amazon has joined an incredibly crowded health and fitness market, years behind more established brands. But Amazon could have…