The author would do well to look up SGML; Markdown is fundamentally about sugaring the syntax for tag-oriented markup and is defined as a superset of HTML, so mistaking it for something like TeX or Word really demonstrates a failure to engage with Markdown per se. I suppose that the author can be forgiven somewhat, considering that they are talking to writers, but it's yet another example of how writers really only do research up to the point where they can emit a plausible article and get paid.
It’s worth noting that Microsoft bought PowerPoint, GitHub, LinkedIn, and many other things—but it did in fact create Word and Excel. Microsoft is, in essence, a sales company. It’s not too great at designing software.
So close to a real insight! The correct lesson is that Microsoft, like Blizzard, is skilled at imitating what's popular in the market; like magpies, they don't need to have a culture of software design as long as they have a culture of software sales. In particular, Microsoft didn't create Word or Excel, but ripped off WordPerfect and Lotus 1-2-3.
You've reinvented one of the two reasons that Project Xanadu failed: micropayments have very high overhead relative to the content being paid for. (The other reason is that there literally aren't data structures which work like Xanadu's data model.)
Further, where does money come from? You're sketching a system where money has relatively high velocity, but it's all paying for content, which has marginal cost to distribute; how does money get into this system in the first place? This is why Bitcoin's currently on a trend to zero; once everybody realizes this problem, the system collapses from lack of faith.
I hope that thinking about this for a bit will radicalize you further towards the understanding that a universal income and artists' stipend is the economically-sustainable way to compensate artists, rather than forcing folks to swap scraps of digital coinage.