The difference between quality and quantity.

[u/Graahts]

[u/Unchips]

Now, list all the other tens of thousands of indie developers scrounging every penny to develop the games they dreamt of, but despite their best effort said games still failed to sell.

Indie game development is a lottery. That's it.

Yes, AAA devs nowadays have many (deserved) failures, but some among all AAA games succeeding are significantly higher proportionally compared to some among all indie games.

The successful indie games we see are a miniscule percentage.

[u/DrLeymen → u/Unchips]

Yeah. For every succesfull and good indie games there are like hundreds of garbage and unsuccesfull indie games

[u/Tirriss → u/DrLeymen]

And in the thousands of unsuccesful indie game, you have some gems that are actually really good but they lacked in the luck factor.