Opus is used by basically every company with an integrated product that they control, who doesn't own patents for inferior formats. That includes basically ~all VoIP software, games, YouTube on Chrome and other supporting browsers, messaging apps with audio features, etc. Basically anyone whose main business isn't audio. Because it's the best codec and it's free. It's be dumb not to use it. And if you control your entire product, you can just add support and use it without worrying about compatibility.
Unfortunately, the companies whose business is audio invariably have some sort of relationship with patented, shittier formats like AAC or even more obscure stuff that only exists to collect royalties like aptX, so they aren't going to market Opus to you as a consumer of audio formats or a feature in audio related products, nor promote support and compatibility across devices. And so you pay more, and get an inferior product :-)
Unfortunately, the companies whose business is audio invariably have some sort of relationship with patented, shittier formats like AAC or even more obscure stuff that only exists to collect royalties like aptX, so they aren't going to market Opus to you as a consumer of audio formats or a feature in audio related products, nor promote support and compatibility across devices. And so you pay more, and get an inferior product :-)