I don't think that current laser systems are anywhere near powerful enough to destroy a landing craft. I think that reason why lasers are potentially effective

I don't think that current laser systems are anywhere near powerful enough to destroy a landing craft. I think that reason why lasers are potentially effective against aircraft and missiles is that they are intrinsically fragile and rely on speed to avoid getting hit. But a landing craft can afford to have some armor, and I don't think it takes much armor to stop a laser.