There's issues with doing this with a laser. The vector display used on Asteroids actually steered the beam to form each individual line, and could do it fast

There's issues with doing this with a laser. The vector display used on Asteroids actually steered the beam to form each individual line, and could do it fast enough to draw all the objects on the screen at a decent refresh rate. Steering the electron beam is fast because that is all electronic. If you wanted to do a laser vector display, that's difficult because you'd be physically moving something (the laser or the mirror). Doing that fast is super difficult. You could create a laser raster display (as in the linked blog post), but that won't look or work the same as a vector display.