Depending on what kind of Android device you own you may not need to exit it. You just need to exit the operating system if Google were to pull an Apple.

Unlike iOS, Android is FOSS. This means others can fork the code and take out potential negative features that may get introduced in the Android project and create better versions. This is what leads to projects like GrapheneOS and CalyxOS.

This doesn't mean you'll always have access to the Play Store on these forks. That's okay though because Android is built around user control. You can always sideload apps directly from developers or use alternative app stores to find software you want to install like fdroid or Aurora.