Per the article, they didn’t play contemporary games and only used off-the-shelf GUI tools on the niche Mac platform — this in an era where “real games” used handcoded x86 assembly. Yet their creation outsold practically everyone in the industry by an order of magnitude.
Where are the tools today for someone like this to be successful? Unity is of course impressive but seems very tightly bound to gaming industry thinking — not that approachable or interesting to an outsider.
Around 2000-2005, the Flash GUI had lots of potential here... But then Adobe turned Flash into a programmer-oriented sprawling mini-Java and eventually Apple threw it under the iPhone bus.