What should happen to old historical (half) abandoned shopping streets ? : urbanplanning

Streets like the rue neuve in charleroi, with many abandoned buildings but also old architecture. These shops will not return because the industry will never be what it was and e commerce has changed a lot too.

Should they just convert the buildings into normal houses or just demolish all of them ? What about the ground floors ?

Some examples:

rue neuve, charleroi: https://www.google.com/maps/@50.4128365,4.4446384,3a,75y,33.78h,89t/data=!3m6!1e1!3m4!1sgzzc0opMxmaA7APc6Vv17w!2e0!7i13312!8i6656

rue spintay, verveirs:

https://www.google.com/maps/@50.5938643,5.8581739,3a,60y,230.8h,83.76t/data=!3m6!1e1!3m4!1sgzOZOpxSXA1z_hrgomks5w!2e0!7i13312!8i6656