The vertical video takeover is here

Smartphone-first usage pushed social platforms from horizontal media toward vertical video.

Snapchat Stories popularized the format, and Instagram, Facebook, YouTube, Twitter, LinkedIn, and others copied it.

TikTok then fused vertical video with algorithmic discovery and easy creation tools, making it the dominant model.

Vertical video is now the default for social media and mobile entertainment, reshaping feeds, monetization, and creator distribution.