Why must Toyota curse us with 5x100?

Do you know how hard it is to find used tires + wheel combo on marketplace when they are all 5x4.5. Not to mention the only few 5x100 i manage to find are either oversized suburu that rubs my wheelwell or more than half, dont extend far enough to not scrape the brake caliper. Q_Q

All other toyota models have made the switch a decade ago. It took till gen 5 to finally decide maybe prius can benefit from a larger selection of tires. Just curious, but is it possible to swap a 5th gen wheel barring to a 3rd or 4th gen? Not that i would attempt it, but hypothetically. Asking for a friend.