Earlier quoted context omitted.
By this logic our computer operating systems would not improve, ever. Web browsers, built-in networking, music players, image editors, mail programs, even Solitare - all things that at one time were separate market segments.
All of those products have been improved by COMPETITION. The most critical, most important and ONLY thing that makes modern capitalism work for non-rich human beings. Every single field you mention was thriving when there were multiple players fighting over your money and have started to become exploitative and abusive as soon as one player killed the others and started rent-seeking. Competition is crucial for market…
Competition is great and works, except when it isn’t and doesn’t. Dogmas are usually bad, try to avoid them.