Boycotts don't work and it's hopelessly idealistic to think they do. What happens if you boycott your closest petrol station, spend extra cash, time and CO2 to

Boycotts don't work and it's hopelessly idealistic to think they do. What happens if you boycott your closest petrol station, spend extra cash, time and CO2 to reach the next closest one? You've penalised yourself, and the environment. You may or may not convince other people to do the same, but the drop in revenue may not be noticed, or not get attributed correctly, or might be more than offset by the extra revenue from the adverts. Meanwhile the replacement place that you're using notices that people seem to be tolerating the annoying adverts so they decide to do the same. Direct action is likely to be more effective.