Most of them are. The ones you see in supermarkets and similar venues are generally licensed, and are not corporate stores. Generally, stand alone stores will be corporate.
The only time I'm not carrying is when I'm in bed, because it's too lumpy when I do. I'll be carrying in Starbucks the same way I do everywhere else. Unfortunately TX doesn't have open carry yet, because we have too many "republicans" who used to be democrats in our legislature because they knew they couldn't get elected under that tainted label.