No, Volvos VST costs a dealer $6K and the Vadis PC for newer Volvos costs many thousands more, NOT to mention the many hours of tech training needed to properly train todays dealer techs. That's still just the tip of the iceberg.
Do some Volvo dealer trainees or techs ever make mistakes? Yes, all humans do and I'll bet that you do too in your line of work. Most good techs try hard not to however.

The little guy in the corner shop, marginally getting by who's usually a disgruntled ex-dealer indy guy because he couldn't cut it as a dealer tech 15 yrs ago but hasn't had any modern day auto education? He has little overhead in comparison and can try working for less money but he won't be in business much longer. They aren't keeping up with modern technology and can't. As far as Volvo is concerned and in my area, I know that none of them have worked in any Volvo dealer, had any factory training in over 20+ yrs. What can they then really know about a modern day Volvos technology besides the basics?

Here's just another example of profit:
A plumber comes to your house, it's at least $50 for the service call PLUS whatever else is wrong. Let's say there's a clogged drain that needs snaking, plan on spending $300 and he'll be done in minutes.

Shall we try discussing "fairness" in the medical field? How about lawyers?
We could go on. In every walk of life, everyone tries to make some profit one way or another.

For those who don't like that, do it yourself. I do most things myself BUT there are times when I too need to hire someone who's experienced at what they do and I pay.