But they're still selling lots! Why? They're approved by the examination boards, and have an effective monopoly. (oligopoly if you include HP and Casio, but most schools choose one brand and require all students to fall in line).
The academic market is not remotely capitalist, so even though there are cheaper & better options available that people will use in everyday life, the "official" results will still use the officially-sanctioned products.
The hardware is ancient. It's really overpriced. https://xkcd.com/768/
But they're still selling lots! Why? They're approved by the examination boards, and have an effective monopoly. (oligopoly if you include HP and Casio, but most schools choose one brand and require all students to fall in line).
The academic market is not remotely capitalist, so even though there are cheaper & better options available that people will use in everyday life, the "official" results will still use the officially-sanctioned products.