I wonder if a large chunk of the population choosing to only buy non-discretionary goods for an extended period of time might freak policy makers out more. Not a targeted boycott. Not a strike still going to work. Lower effort to participate. For example if this caused US Amazon orders to fall by a 1/4 for two weeks and similarly across all retailers.
Low effort to participate isn’t a feature. The point of these kind of actions is to show that there’s a lot of people who are really fired up and won’t be placated or deterred unless policymakers meet their demands.
Sort of? You want something that's going to actually affect the corporations involved. It's not about showing effort, because the government doesn't care how much effort you put in. It's about showing power, making a statement that we "the people" have power and can use it if you don't do what we want. A long-term "nonessentials boycott" might be more impactful in that sense.