These crazy outdated licenses that let you print as many magazines or books you want forever, for a one-time price. But if your hobby is making apps, then suddenly the same font will cost you 50 times more - for a single year.
I guess these font sellers imagine there’s still some app boom - a Klondike rush with developers bathing in dollars. Maybe if their licenses were more realistic, piracy would be less of a problem.
Linux DEs generally don't, but perhaps they should, given that open fonts with decent quality and extensive coverage are out there. Something like the Noto family.