>In 2025, after a £12m investment, YASA opened the UK's first axial-flux super factory, in Oxfordshire.

In Bay Area that is small investment in a startup which would be able to lease a small office

>Could lead to significant efficiency gains for EV's, because 1/4 of the motor weight means better power-to-weight ratio...

that would help VTOL a lot. Unfortunately YASA motors are priced for supercars and availability seems to be low. Until some factory in China starts making similar ones, there are not much chances on getting hands on such a motors.