Airsoft has grown massively. While it is more of a whole day event, it fills that same niche but better in many ways.

Most lazertag places I remember seeing were inside or connected to arcades, and those really aren't a thing for kids these days either so it makes sense the lazertag places aren't as widespread as they used to be. If you're specifically going to travel to just do lazertag, you'll probably just travel to do airsoft or paintball.