But it wasn't in the shopping lens.

It was a bad idea. But let's not throw random general statements in a concrete discussion.

Did you ever get a result from the shopping lens which could be mistaken for an advertisement rather than a product result you can buy on Amazon?

It's a product you can buy on Amazon trough an affiliate link. If't that's not advertisement...

No, it's not [0]. You searched for something, and the default installation searches for it among your menus and in Amazon.

Copyright infringement is not theft.

Amazon lens is not advertisement.

[0] http://www.merriam-webster.com/dictionary/advertisement