I agree with your thoughts. I teach high school students technology in the UK and 3dprinting is making its way into education and the classroom more and more. At my school every student who attends the school learns about 3dprinting and how to access the technology. Many more schools are doing this as well and there are organisations that are dedicated to promoting 3dprinting in education so more students will learn about it. Therefore, when prices reduce and the user experience gets more streamlined I can see many students purchasing them over the next few years. Even at this early stage of 3dprinting in education I have students in my classes wanting to buy a 3dprinter for home so they can experiment. I have seen the excitement this creates in the classroom and it is here to stay!! The kids can't get enough of it, like smart phones and the internet, it will grow and grow and become more main stream. Once a big company that we are all familiar (google, microsoft, apple etc) with decides to embrace it then it really will explode.