AFAIK, this is a Fraunhaufer license issue.
Either Steinberg buys a bunch of codecs from Fraunhaufer and delivers it for free with every application, or they don’t include the codec, which you then have to buy from Fraunhaufer. So apart from a tiny profit margen, most of that money goes to Fraunhaufer, not to Steinberg.
Fredo