Having used various types of vlm cleaning, along with hwe, over the years, I can tell you from my experience vlm cleaning IS inferior. It simply doesn't clean as well. However, the best cleaning is not always what the customer needs or can afford.
For instance, I just finished cleaning a 60,000 sf school today. My full-service hwe price would have been ... well, it would have been a lot. There is no way they could have afforded that. Besides, they had a bad experience a few years back where a hack molded their carpets and every book in their library. They are hwe shy, to say the least.
I got that school, and every other school in the system BECAUSE I could "dry clean."
Am I a hack for offering them what they asked for?
In many of your eyes the answer to that is a resounding YES! However, in their eyes, their carpets look great, are dry in under an hour, they have no more mold issues and they get it done for much less than what I would have to charge them to hwe.
In fact, if it wasn't for the fact that I can use vlm on their carpets, they wouldn't have been having their carpets cleaned for the years since they had the hwe hack ruin their library.
PS And to PROVE to you ICS cleaners that I am a vlm hack, I don't vacuum on these school jobs, A-N-D I use a film former instead of a crystal encapsulate.