The exclusives business model worked for Sony for the ps4 generation for sure. But it seems that the cost of developing ever larger and more ambitious games has ballooned in recent years. Intentionally limiting your distribution seems misguided. Even Sony has been releasing their exclusives on PC too after some exclusivity time.
On the other hand it seems to work for Nintendo which keeps their consoles intentionally underpowered and don’t try to compete with the AAA game expectations with the majority of their titles.