They do make them like they used to and yes they are expensive. But they also have temperature control and can come in electric: https://agaaustralia.com.au/aga
https://www.esse.com/range-cookers/1000-x/
Like many things, people wanted cheaper and they wanted it now. I refer to this [1] excellent website to explain the economics of purchasing equipment or services, buying your first or last oven or for use in project management decision making.