Not really the same situation if you ask me. Minecraft hasn’t been a solo project for a the vast majority of its lifespan. Mojang was a small team but it really hasn’t been a solo effort since the very early days.
RCT was basically start to finish developed by one person with some sound and graphics work done by a couple other people.
When Jens Bergensten joined Mojang (to work on Scrolls), Minecraft was quite advanced and already had the nether and red stone. Notch did not rely on any store and was using his personal paypal account that got blocked due to an anomalous amount of transactions.
RCT was basically start to finish developed by one person with some sound and graphics work done by a couple other people.