It's not just the marketing side, every customer facing thing corporations can outsource is being pipelined through the same kind of ad-like machinery.
After considerable effort educating the non-technically inclined members of the family to check URLs to avoid shenanigans, cue our ISP sending very important confirmation links via SMS (bad enough) pointing to isp-name.onelink.me, amid a particularly active wave of SMS phishing scams earlier this year. One of the top 10 telecom corps worldwide in size and the mf'ers couldn't bother using their own domain.