This is just blatantly not true, anyone who has tried to gamble on sports can tell you that companies go to quite incredible lengths to make sure that nobody outside of the few jurisdictions where they're legal can gamble online. I live in Nebraska, and I have to go travel across to Iowa before I can do anything.
True, it's state by state, but a lot of states allow it. And even if you're not in the right state you can always go to sites from other countries (e.g. betonline.ag)
