[DennisP]

Possibly. Long-distance high-voltage wires get pretty expensive. At Starship launch costs with modern designs, SPS actually looks pretty economical.

[sidewndr46]

If someone has compiled a cost comparison of transcontinental HVDC links compared with the alternative spaceborne solution I'd certainly love to see it.

The space based solution is possibly actually more reliable, as there are actually less components involved that could fail.

[LargoLasskhyfv]

No protective atmosphere. More (micro)meteorites.