People set up private servers and then sell use of admin commands or mods for real money. Stuff like 100 diamonds spawned in for $5. If course mods make it more seamless by implementing currency systems directly into the game, but the basic premise is selling in game power for real money. It's extremely popular to do this in other games like Rust and Ark as well
I think if I have kids I'm gonna break out the old consoles in order, so that they have an appreciation for the history and because it'll probably be a self-limiting hobby due to looking like shit compared to anything on a phone
Up until the early-mid 90s there were the lingering effects of arcade-oriented design where shit was super hard to get your quarters, but yeah even that's not so bad compared to the newer shit that takes your quarters digitally.