Only once you build greenfield, e.g. new factories, making specially shaped and sized robots for automation jobs becomes worth considering, IMO.
Exactly what humans already do cheap and easy.
No reason for humanoid robots.
That might be our future. However at the moment humanoid robots aren't good enough in general to be good at prototyping.
> Exactly what humans already do cheap and easy.
Human work hours are becoming every more expensive, thanks to lucrative outside opportunities.
> No reason for humanoid robots.
At the moment. This might change in future.
See also the humble domestic dishwasher. It's a robot that washes dishes and works in an environment that's otherwise sized for humans and hasn't really been redesigned to accommodate robots. Similar also for washing machine and dryer etc.