Final answer:
Ubuntu, Fedora, and Arch Linux are three popular Linux distributions with different strengths and package offerings. Newsgroups can be located through search engines, and the advent of Linux has significantly impacted the economics of the tech industry by reducing costs and promoting innovation.
Step-by-step explanation:
Three different Linux distributions commonly found on the Internet are Ubuntu, Fedora, and Arch Linux. Ubuntu is known for its user-friendliness and widespread support, making it a popular choice for beginners. Its software repositories are vast, filled with packages suited for both personal and professional use. Fedora, sponsored by Red Hat, is considered cutting-edge and focuses on open source innovation. Its package collection is often updated with the latest software developments but may require more frequent updates. Arch Linux, targeted at more experienced users, provides a rolling release model and allows users to customize their system with its minimalist approach.
As for locating Linux newsgroups, one might search for 'Linux newsgroups' or 'Linux forums' using a search engine. This could lead you to resources like the comp.os.linux announce newsgroup on Usenet or popular Linux forums and community discussion pages.
The development of open source operating systems like Linux fundamentally changed the economics of high tech by reducing costs for PC manufacturers and enabling organizations to build powerful computing systems without expensive proprietary software. This shift contributed to breaking monopolies and pushing innovation in the tech industry.