When the term FAANG was coined, those 5 companies were paying engineers around double what they could ask for anywhere else. I believe that's when software engineers started grouping them together. It became a goal for many young engineers to join because of the fantastic salaries/benefits.
Things have changed since then but the point remains, FAANG generally means "large company that pays above market for software developers."
I know how you might make money. You build a game. Maybe its fun and ripe for mods like minecraft. Open source it under GPL. Build a community of hackers/gamers who want to learn and collaborate. Have an awesome collection of mods for your game. Once you build a name for yourself, take donations or release a new game or talk at conferences.