You’re confushing “indie devs” with independent developers.
PUBG has sold 10m copies (so far).
It is made by an independent developer.
People are not buying it for its engaging story and content.
Its sell for $29.99 USD.
Sunset has sold maybe 4000 copies.
It is made by an indie devs.
People are not buying, let alone for its engaging story and content.
Its sell for $19.99 USD.
Independent developers make games.
Indie devs make walking simulators.
If you’re not sure on the difference, I recommend watching The Indie Crew.