Let's say that, for some reason, John Sobieski refuses to help the Austrians in 1683. The Ottomans annex Vienna and some surrounding land from the Austrians and bring Vienna into Royal Hungary, which is annexed into a vassal Hungary. Then what?
Parts of Austria are still free; only the territory of Vienna and land immediately around it are brought under Turkish rule
Bonus Points if you can give an explanation for Poland to not join the war without drastically changing the Polish-Lithuanian Commonwealth