Mega-Network Design Analysis

I recently did my taxes with Turbo Tax and was greatly appreciative of the interface's design. It made my job simple with a smart navigation interface that includes an estimated time remaining feature for our convenience. Let's attempt to understand the design principles used by various mega-networks in order to understand their success. Here are some facts: Facebook and Youtube are the most popular networks in the United States. The Instagram network has 160 million users in the U.S. and India has double that.

Facebook:

• Focus: User-generated media of all sorts (video, image, text), social connection
• Features: Chat, Stories, Cured Feed, Followers, Live Stream, Comments, Shopping
• Total Users: 3 billion monthly active users (MAU)
• Revenue (Profitable): Ads
• Result: Creator Economy

TikTok :

• Focus: User-generated content, short video
• Features: Creative Tools, Cured Feed, Followers, Live Stream, Comments
• Total Users: <1B users
• Revenue (Profitable): Ads
• Result: Creator Economy

Reddit:

• Focus: User-generated content, Q/A, community
• Features: Unique Sub-domains, Karma, Vote System, Mods
• Total Users: > 1B users
• Revenue (Non-profitable): Ads
• Audience: Mostly male
• Result: High Quality Search

Pinterest:

• Focus: User-generated content, images
• Features: Saved Pins, Image Search, Cured Feed, Followers
• Total Users: 500 million MAU
• Revenue (Non-profitable): Ads
• Audience: Mostly women
• Result: High Quality Search

Tinder:

• Focus: Matching user profiles, dating
• Features: Swipe, Chat, Profile Visibility Boosts, Cured Feed based on matching algorithm (Gale-Shapeley)
• Revenue (Profitable): Subscriptions + Ads
• Result: Love Court?