Lasers are easier to setup (you just need two end stations) and don't need dedicated lines (you don't have to lay any fiber). If you have an existing connection

Lasers are easier to setup (you just need two end stations) and don't need dedicated lines (you don't have to lay any fiber). If you have an existing connection between two points, then fiber might be better / same, but if you had to setup something for cost / speed, then laser would win.