How does fining people for looking at their phone while crossing the street not effectively curb that behavior? Regardless of whether it's addictive or not. Sm

How does fining people for looking at their phone while crossing the street not effectively curb that behavior? Regardless of whether it's addictive or not. Smoking bans, seat belt laws, etc. all seem to work pretty well despite the fact that many people really don't like these things.