Why doesn't Adobe go after counterfeit products on Google?
When searching through Google for terms like "Adobe Acrobat" or "Adobe Pro" there are a number of obvious counterfeit products for sale - usually at unreasonably low prices like $19.
There are also advertisers who promote fake discounts aggressively. In the case shown below, the "discount" is simply renewed every 15 days, and is no different from the standard price. This is advertising fraud.
Both of these acts are illegal. Selling counterfeit software is obviously illegal, while a fake discount is an unfair business practice - the Lanham Act gives Adobe the right to the profits from this illegal activity.

