What AMD is doing is really insane in my opinion. I'm not sure if they are pricing their processors low on purpose and/or if they have found a way to manufacture cheaper and/or Intel was screwing consumers with their pricing since they were so dominate.
No matter what, AMD is able to provide something that is measurably better and significantly cheaper than the incumbent, and if the blue ocean strategy holds, they should become the new incumbent in the near future.
The argument was always "no one can use more than X cores" - but software seems to trail hardware in these examples, not the reverse. When Zen was first released, many of the less expensive 6 core options performed worse than Intel's similarly priced 4 core chips. But when comparing modern software using those old parts, AMD's 6 core offerings tend to hold up better.
It feels like AMD is finally ushering us into an era where being able to take advantage of large amounts of parallelism is going to become important for almost every developer.