I'm just a satisfied customer (Resolve and hardware), but it probably helps that it's a private company run by a cofounder CEO that seems to both understand and care about the company, its products, and their market.
From an outside perspective, "selling good products at fair prices and making bank" sounds about right for the hardware, but I always assumed the Resolve software itself was, if not a loss loss-leader, also not a major profit center.
Then again, there's something to be said for volume, especially in a market that includes lots of independent operators and dedicated amateurs worldwide who are willing to spend what good money they have on their craft.