How would your example differ from a government simply putting a price on various tasks (helping elderly, etc) and paying with regular money? I'm not saying it

How would your example differ from a government simply putting a price on various tasks (helping elderly, etc) and paying with regular money? I'm not saying it's a bad idea (I actually like it!), but conceptually it seems no different to the current monetary system, just with governments taking a more inventive approach to paying for public services.