I've found the exact opposite. The deeper the moat the bigger the jerks. I can pick up a guy at home depot who'll bust ass as hard as I will at a very reasonable price. Can't say that (especially the first part) about most professionals. Anything with a license or high capital investment keeping upstarts out is like pulling teeth to work with. Even for brick and mortar this holds. My local upholsterer is a pleasure to work with compared to any tire and alignment shop.
That said, I'm also not hiring people to put together Ikea beds for me or bringing piles of gravy work to any given professional.
Edit: I will add, I have consistently been amazed with what concrete truck drivers will do above and beyond the bare minimum and the consistent "get it done or tear shit up trying" attitude they bring. But this might be a regional thing.