How would you address the problem when you can’t copyright a business model or an idea? It’s very true the value is in the execution, and in a lot of cases, an enormous tech company with effectively limitless resources will always be able to execute better than you.
I’m a fan of using regulation against such entities and behaviors, I’m just unsure what the antitrust or monopoly issue is on short social video clips. You could build something similar with Backblaze, Cloudflare, and mobile apps.