Even if we entertain a distinction between browsewrap and clickwrap, browsewrap is generally enforceable, especially after minor modifications to placement and/or font size.
Even for sighted people, the notice is often easy to miss - and this is by design.
I don't think many websites have a secret ToS that they hope you won't read, I think most of them don't even know what their own ToS say. I signed my lease on a site with an explicit checkmark for ToS that said I agreed I would only use exactly IE7 to use their site.
I suppose I can do no better than quote from the Wikipedia page I linked:
> The Second Circuit then noted that an essential ingredient to contract formation is the mutual manifestation of assent. The court found that "a consumer's clicking on a download button does not communicate assent to contractual terms if the offer did not make clear to the consumer that clicking on the download button would signify assent to those terms."
The same page cites a number of cases where a "browsewrap" agreement was found unenforceable and only one where one was found enforceable - and the latter, for what it's worth, involved a sale taking place through the website rather than anything resembling passive browsing. Of course there exist other cases not listed; and there are situations that muddle the distinction between clickwrap and browsewrap. But at least, the very common pattern of, as you said, burying "a notice in the footer of each page" without anything vaguely resembling active consent, as practiced by probably the majority of commercial websites on the internet, seems to pretty clearly fall on the unenforceable side of the line based on those precedents.
https://en.m.wikipedia.org/wiki/Browse_wrap