... and always have been completely bedazzled on why MS Word even has a business case. How this piece of software could gain the market let alone survive to this very day is a mystery to me.
Because Corel doesn't aggressively market the fact that WordPerfect 1.) still exists, 2.) is less expensive, 3.) is much faster and more stable, because 4.) it's not sold as SaaS, and 5.) it can open and save Word documents natively.
Unfortunately, even if they did, there are too few people who perceive WordPerfect as a "big name" anymore; nobody wants to be the first to shift away from Office or Google Docs and be the office that everyone hates sharing documents with, so it's a classic case of "everyone uses it because everyone uses it"