That Ban is an issue, nobody has made the comprehensive case for remain. The argument that status quo is better than change is a difficult argument to make. People will prefer change especially if the argument resonates with their perceptions.
I actually think leave has made the better argument, I am not saying its the right argument but it is coherent, remain has made no such case, it is just more of the same. This boils down to leadership, who even leads the remain argument? Everybody knows who rightly or wrongly has made the leave argument. Of course the remain argument has been supressed by the power of the mainly leave print media and the leave leaders have almost open access to certain parts of the media.
Remain should be convincing the likes of myself of the righteousness of their cause, but they have failed and failed miserably. They have allowed the argument to drift into the realms of patriotism and nationalism without making the case for internationalism. That is a major failing of remain. They have concentrated on minds rather than hearts.