Insulating and heating outside pipes is a solved problem and adding a small layer of insulation around a pipe with electrical heating elements is much cheaper a

Insulating and heating outside pipes is a solved problem and adding a small layer of insulation around a pipe with electrical heating elements is much cheaper and energy efficient than insulating+heating an entire house. Short term anyhow. Keyword is "self-regulating pipe heating cable". I don't know why you're making it out like it's rocket science and with such confidence.