No need. Every other charger manufacturer makes chargers that support 800 volt cars. You can buy them off the shelf. Hyundai's (same company as Kia) charging stations use third party chargers.
The main issue is that North America's charging infrastructure is in a bad state due to a lack of standardization and regulation. Lack of direction means lack of investment.
Like this one: https://www.youtube.com/shorts/RC-hipaK3GY
Their Korean stations are custom builds but they're not doing that everywhere: http://www.koreaherald.com/view.php?ud=20210121000481
The main issue is that North America's charging infrastructure is in a bad state due to a lack of standardization and regulation. Lack of direction means lack of investment.
Europe set their standards and direction early which is why the EV infrastructure is better. This is the European plan to 2030: https://www.fleeteurope.com/en/new-energies/europe/article/f...
North America will get its act together eventually.