@UltraViolet I don’t use Instagram, so let me ask. You’re saying the ads are in as posts, right? I’m wondering if they are doing it the same as Facebook (since owned by the Facebook) and disguising ads as content. If so, then I’m assuming it’s as Fanboynz has mentioned about Facebook:
Basically, he’s saying they can’t really code the difference because it couldn’t really read between whether it’s an ad or someone posting something.