> The question should be: How did MongoDB become so successful? Ability to store Algebraic Data Types and values with lists without a hassle of creating a ton

> The question should be: How did MongoDB become so successful? Ability to store Algebraic Data Types and values with lists without a hassle of creating a ton of tables and JOINs. Postgres added JSON support since, plus there are now things like TimescaleDB, which didn't exist previously.