This is not true. Google or any other reputed company (for instance Facebook) does not make these decision based on profit only. They also think long term, they do not want to get associated with advertisers that are scams or look suspicious. This is because it hampers the image of the company and thus genuine companies may stop using them. This is why they keep denying  a lot of advertisements like affiliate links. Coming to the question raised by OP, Google has ye not announced such a decision and thus there is nothing to worry about.