Firstly, thanks to Sonic for investing in, and continuing to offer Usenet access for as long as you have.
In light of its fading relevance, small user base, and other factors, I can understand Sonic's rationale for abandoning it, purely on rational terms.
On the flip side, it's still one of the services I still rely upon, and to me a feature that helps characterize and separate Sonic as a premium service provider. Having reliable access in one package has been a great convenience, and one of the key factors why I've remained a customer for ~8 years.
However, now that I'm being compelled to begin to rationalize my own terms with regard to ISP service, I can't dismiss the fact that the combined cost of Sonic's service, as well as a separate Usenet provider will likely force me to seek other pastures in order to make the best use of my limited budget.
Sonic has provided great service overall, and the technical support has been top notch when I've required it, which has been seldom, but in light of the coming changes, the value proposition had dramatically changed, and I'll be forced, albeit reluctantly, to seek other pastures. I've resisted other overtures for many years, but I guess the time has come.