[swalsh]

I think Linux went mainstream when the default installation of one of the distributions came with an icon that opened up "Amazon.com"

[FillardMillmore]

Color me ignorant, but which distribution is that?

[carterehsmith]

Ubuntu did some years ago; it did cause some uproar. Just search for "Ubuntu Amazon"

[bayindirh]

coughubuntucough

IIRC, they recently discontinued the link and related data sharing though.

[Fnoord]

It was always possible to uninstall it. Just a nuisance that you have to, while clearly no users ever desired it. It was also terrible that all search requests went plaintext to Amazon.