Although it gives you a great foundation, AngularJS 1.x doesn't provide advanced UI out of the box. If you're building professional HTML5 applications under tight deadlines and budget, you either need to build the UI yourself or turn to a third-party library. In both cases there's loss of productivity - you either build everything from scratch or you have to make that third-party UI wire up to AngularJS 1.x.
Considering Angular 2? Check out Kendo UI for Angular 2.