As a contractor it really depends on how much you're paying. Yes even a cheap contractor is expensive as hell but you really do get what you pay for.

We are basically the most expensive local option available for our trade so reasonably we get customers that leave and go with cheaper contractors all the time. They almost always come back to us. We regularly get called out to fix the issues caused by other budget outfits. Just last year one of our customers had one of our competitors install 5 brand new rooftop airhandlers for their grocery store. The airhandlers never worked after being installed and that contractor sent people back out 5 times to try and fix them with no success. The customer then called us out at which point one of our techs immediately found that the other company never moved the built in smoke detectors in the airhandlers out of the shipping position. Within less than an hour the problem was resolved and all 5 airhandlers were running perfectly.

The trades are incredibly short on workers right now so the tradesmen who are good at their jobs tend to get snapped up by the highest paying companies who just so happen to also be the more expensive ones. That leaves the budget outfits with the workers who tend to be less experienced/adept.