Why would it? 5G modems are expensive. GL.iNet makes something like that, Puli AX — it usually goes for around $350 [1].

[1]: https://store.gl-inet.com/products/puli-ax-xe3000-wi-fi-6-5g...

79$ is not “high end”. 5G enabled router would cost twice as much - for a feature that not everybody will need.