I think you overestimate how technical most of these type foundries are. The industry is basically few huge corporations like Monotype, Adobe, Google Fonts and

I think you overestimate how technical most of these type foundries are. The industry is basically few huge corporations like Monotype, Adobe, Google Fonts and then 100s of tiny independent 1-5 person companies. These are no web engineers and mostly are just somehow trying to figure out how to survive. I wouldn't think there's much malice behind it... more like incompetence. Most of webfonts sales are delivered just as .woff files to be selfhosted. Probably also reason why people use them because Google Fonts exists specifically to track people.