One thing to note is that not only is it within an advertiser's rights, it's probably also the better business decision. If you can do a marketing campaign on

One thing to note is that not only is it within an advertiser's rights, it's probably also the better business decision. If you can do a marketing campaign on say FaceBook where your ads will be targeted to your narrow market or a campaign on Twitter where your ads will be haphazardly place; which would you do? It's Elons own fault. If he wanted Twitter to be able to compete with its competitors he probably shouldn't've fired the engineering team.