He said “because of ballooning development costs”. Stardew valley is famously a one man labor of love, the opposite of ballooning development costs.
$14 pr sold copy is ridiculously high in this context, because development costs is only for one dude.
You’re comparing this guys runaway success with a company with several development teams, office spaces, marketing teams, accountants, probably janitors, security, etc, etc.
I’m not saying he is in the right, just pointing out that it is apples to oranges.