Fraud, secrecy and funding through a small number of select people are all still a big part of science. That's precisely the problem.
I think you're relying on a lot of myths rather than facts. Lord Kelvin was a professor, with a modern academic career path. His father was a math professor, his grandfather a farmer. He is "Lord" Kelvin because he was ennobled later in life. We use the same apprenticeship and government sponsored training system that Kelvin did, as well as the scientists for several generations before him.
Science is also a money making proposition for a great many organizations, and has been for a long time. Universities in particular turn a big profit on pure scientific research, as do many small business "SBIR shops."
My biggest quibble though, is that there is a clear demarcation where science ends and technology begins. That's very hard to nail down to the point of being meaningless.
Think about it from my view. I'm a scientist. I also build and sell what I consider technology. This technology is an integrated graphene-biochemical sensor. People outside of my company and customers very firmly consider this science, because they've barely had a few years exposure to this field as a science and have never seen or heard of this as a technology. At what point is it a technology? This year when we launched a new marketing effort? Last year when we launched our dev kit? A year before that when my design was adapted by a professional engineer? A year before that when I built a complete system using only consumer grade components? Several years before that when I trained other people to build these? In my mind, this became a technology once I'd built the first system and knew how to build more. There were about 10 years of "science" funding between then and now. Having gone through this progression, these advances had much more to do with available funding than any scientific or technical understanding.
Both my example and yours (Xerox, US profiting off of British inventions) have more to do with business acumen than science or technology. Scientists are part of this process! It used to be assumed that scientists would move strait from the lab to take leading roles at big companies, sit on boards, or serve as CEOs. That's no longer part of scientific culture, and it's at the root of why you don't trust the GMO testing practices. The best scientists now stay at the bench (university) and there is a barrier between commercialization and research.