It hasn't hit a price point that makes it commercially viable, yet. $150k for a tool that can remove mill scale as well as media blasting or acid dip isn't competitive. It hasn't been demonstrated on the heavy scale experienced in field applications where such a tool would be useful.
Also, with this quote:
"The company explains that the device aims short, 1000-W laser pulses at the rusted piece, producing micro-plasma bursts, along with thermal pressure and shockwaves to sublimate the rust and separate it from the metal without damaging the piece. "
They're looking for fools.