People making along trips want to charge quickly and are willing to pay ~3x the retail cost of electricity to do so. So it can be quite profitable right now.
Longer term I expect charging to become a low margin commodity business, but other networks have had serious reliability issues so people may be willing to pay a premium simply to know everything will work when they get there.
PS: Even longer term I expect in road charging to become a thing on major highways, but that’s easily 20+ years away.