OK, I am going to weigh in on this as both a beekeeper and a licensed pesticide applicator/pest management professional.
Going strictly by the book, and I mean literally, in the textbooks for pest management/pesticide applicators, at least in Nebraska, If a honey bee nest is found to be in a residential or commercial structure (house or building) the "solution" is to terminate it. Kill it. Immediately.
This puts a lean towards pest control service providers to handle honey bee nests issues like cutouts, etc.. Mostly because the typical methods of terminating said nests is done by using restricted use chemical pesticides which in this state, require one to be licensed to purchase and apply for hire.
Now I remind you, that is the textbook answer.
In everyday reality, the vast majority of pest management companies don't want anything to do with honey bees if they can avoid it. There are some companies who go so far as to tell customers that it is illegal to kill honeybees in the state because they are protected. This is not correct obviously, but it serves the purpose of getting them out of having to deal with it. They will then at least 90% of the time, recommend the person find a beekeeper.
Most people get referred to the county extension office to find said beekeeper assistance. (a lot of those calls get sent to me because that is my business :-D )
Both the county extension offices and the state Dept of Agriculture (who also happens to be the licensing body for pesticide applicators and who essentially "wrote the book" that I discussed above) will tell people that the preference is to keep the bees alive if at all possible. Advice that both personally and professionally, I appreciate very much.
Speaking for myself, the primary reason I got licensed to be a pesticide applicator was to minimize, reduce and more carefully mix and apply chemical pesticides as part of a more comprehensive integrated Pest Management plan. I know that there will be times that the chemicals will be called for to be used, but I can help make sure they are prepared and applied more cautiously and accurately. anyway, I digress.
There are a few who do business as what you describe as NWCOs though for the most part, they don't do much when it comes to honey bees. They stick to the "critter control" venues for the most part.
On paper, the push is to the PCO's as you call them, mostly because of the possibility of a restricted chemical being used in the situation.
In reality, in my area there really is no "friction" because most of the parties involved (except maybe the terrified homeowner who has the bee issue) are pushing for beekeepers to handle the bees.