Yes, absolutely. It is much harder to make money as an affiliate nowadays and therefore you must have a site that provides additional real value to the buyers.
Review sites are the most common path to success. But the reviews must be high quality and detailed, meaning you need to make a real investment in the site. You can't just slap together shallow reviews. Also, keep in mind that Google will not accept ads from landing page sites whose only goal is to redirect.
An example of a site that has succeded using this model is
1. First they reviewed treadmill desks, got SEO traffic and monetized through affiliate referrals.
2. Next, when they were moving enough units, they negotiated better deals directly with the suppliers.
3. Finally, they became a standing treadmill desk company and now design and manufacture their own products.
One last point: While in the early days of the affiliate game you could direct link, you will get much less traffic from Google or Facebook if your ads even get approved, because only one ad per domain can be shown therefore if there are other affiliates direct linking as well as the parent company itself, your traffic will be a trickle.