Product pages don't engage in cloaking or selectively serving a different a different page to the search engine crawler from the one served to the visitor. They are ranked based on the content visible on the page. If that's the best match to my search query, so be it (it probably means I am indeed searching for said product page).

Paywalled news articles rank on their full content (potentially displacing other, free sources) yet do not allow me to see it without paying. That's a bit of a problem because if I don't intend or am unable to pay I would much prefer seeing the other source which is free.

(the ice cream example is disingenuous because clearly we do not yet have the technology for ice-cream-over-HTTP. And when we do get such technology, then absolutely give me the option to block paywalled ice cream).