[Carl Vehse]

A cheaper permit cost is offset by more expensive fuel costs and a reduction in payload size for every orbital launch.

The only advantage of a high-latitude launch site is if one has clients who want their satellites put into polar, near polar, or retrograde orbits.

[BradyLS]

Launches from Canaveral boost a rocket ~1,550km/hr in the direction of the earth’s rotation. Launches from Juneau are boosted ~900km/hr. A bit better than half the added boost from a Florida site (which itself is almost as good as an equatorial launch, despite difference in latitude). Launches from Baikanour receive an assist of ~1,250 km/hr and that site is still in regular use.

All to say that while a launch from Alaska isn’t ideal, it still offers a welcome assist.

[Paal Gulli]

Even Jules Verne recognized the advantages of an equatorial launch. In "From the Earth to the Moon," first published in 1865, he gave a lat-long for the launch site which happens to be in modern North Port, Florida, 135 miles SW of Cape Canaveral.

...The only advantage of a high-latitude launch site is if one has clients who want their satellites put into polar, near polar, or retrograde orbits.

Retrograde? Why on earth would anybody want to launch rockets from Alaska headed TO THE WEST?