I see a nice marketing opportunity for SquareD, et al, to bring out
lines of 300A service panels to replace the ubiquitous 200A now in
every chalet or hut.


No, no, no!

Dad's car, mom's car, son's car, daughter's car = 360 amps additional to the
current 200 amp service or 560 amps give or take...

(Forget about the eight is enough family!)

And how about a 400 car parking garage downtown, each space with a 90 amp
circuit?