Or use a really round bottom wok. Or a Norwegian apfelskiver pan. Or a Japanese tacoyaki pan. Or proper broiling in a salamander. Or for putting out the BTUs cheaply enough for beer making.

Gas stoves and equipment are appreciated by good cooks.

You likely have to replace none of your cookware.

Most common cookware works with induction. Even copper/aluminum core has no problem, and most stainless steel. The stuff that doesn't work is quite niche (pure aluminum/pure copper, and some high-end stainless steel).