I did not get a freshwater licence in Florida until I was 21, because of a rebellious nature. I never got asked to produce a license , and did have many close calls, fishing all over North and central Fl.
One day I felt strongly impressed to get a license and did so. The SAME DAY I got it, We were launching at Orange lake and THE MAN asked me. I started chuckling, and told him my tale, while producing my brand new , freshly printed license.He was not amused.
Ever since then, I have done my best to stay within the law, after seeing where the money goes to fishery and wildlife.
I believe without a doubt I am blessed to catch a lot of fish because of this compliance . I call it reaping what I've sown. Some would call it karma.
If I saw someone not in compliance, I wouldn't hesitate to call on them, unless they were possibly fishing to survive or just naive. But I would definitely speak to them about it .
But we already have way too much Gov. Involvement imo, so I would be opposed to stores asking for your license, and for all the other good reasons mentioned above.