We know that in every single example so far that Monopoly and Competition inversely correlate by definitions
A direct (not inverse) correlation between them happens all the time in tech. Smaller companies get sick of the market leader or monopoly for some reason, produce a better product, and people switch over.
For example, Internet Explorer had a web browser monopoly. Around 98% of web users used it. It lost that monopoly not because it was shut down, but because other, better browsers were released and people organically switched over. Increasing the competition reduced its monopoly.
The same could be said about Teamspeak users moving to Discord. Teamspeak had a monopoly on real-time gamer chat, but people moved to Discord because it was better.