Hi Dan, welcome to the new forums!
I can definitely see how all the fitness tracking devices and mobile/web apps are taking a bite out of traditional fitness coaching. That is to say, that one coach can now design a fitness plan in software that serves hundreds if not thousands of people. People are happy to pay $10/month or whatever for access to, for example, TrainingPeaks which not only plots your training progression via power data and build plans, but can also provides a coaching interface where a coach can monitor and direct the training of many athletes from anywhere with an Internet connection.
Speaking personally, I definitely search the web and YouTube when I have a question. On the one hand, there is no guarantee that information you will get on the web is correct, but then again, there are a lot of coaches that aren't up to date on the latest research and "best practices" either.
I've never used or consulted a coach myself, but I've never been involved in any sport that I'd consider serious enough to need one. Definitely at the semi-pro and pro level coaches are needed, but those positions are very hard to come by and require a lot of experience and credentials.
From what I've seen at the gym, there's no shortage of people that have no idea what they are doing with gym equipment. They probably aren't willing to pay to learn though - maybe if it was a free service attached to their gym membership. There's no substitute for having someone check your form in person.