I guess because this is Hacker News, you're technically correct. From an engineering perspective, you're right that the two platforms share many similarities. B

I guess because this is Hacker News, you're technically correct. From an engineering perspective, you're right that the two platforms share many similarities. But from a business perspective they're completely different. Instagram is where normal people go to show off their life and absorb the lives of others via images. Unsplash is for photographers and consumers of stock photography. As a result of these differences, they have completely different business models, user experiences, and growth trajectories.