I don't think a locally hosted LLM would be powerful enough for the supposed "agentic browsing" scenarios - at least if the browser is still supposed to run on average desktop PCs.
And it doesn't look like the average computer with steam installed is going to get above 8GB VRAM for a long time, let alone the average computer in general. Even focusing on new computers it doesn't look that promising.
This will not result in locally running SOTA sized models, but it could result in a percentage of people running 100B - 200B models, which are large enough to do some useful things.
More importantly, it costs a lot of money to get that high bus width before you even add the memory. There is no way things like M pro and strix halo take over the mainstream in the next few years.