I want to say from thousands of miles and an ocean between us, the roofing market is the same. Most contractors bid the work by hiring the same groups of people that have either low/no skill or are displaced/not exactly legal immigrants.
I was able to hire a company that employed locals and you know what, the price was 25% higher, they took twice the time to finish, and the roof still leaked. I've had one fixed and now have another leak to get fixed. I won't let them back on my property.