I suspect they'll come around. People always underestimate Apple's new products. AVP is particularly frightening, because the initial release as a Pro version is so expensive. While AVP is a product, VisionOS is a platform, and the hardware for it is going to exist in different versions over time -- certainly in some much less expensive versions. AR/VR is not going away and neither is Apple.
The AVP hardware appears to have sold around 180,000 units the first weekend (more than expected), and the percentage of AVP users who would use Channels is much higher than the percentage of Mac users who would use Channels. So, I think the value proposition will become clear to them.
I have an AVP coming, and I'm willing to wait for a while. If Channels doesn't come around and at least minimally support it, I'll be sad, but I'll probably just move on to a system that does.