You’re trying to lump different advertising together. I am specifically talking about gas station signs. People in EV’s don’t suddenly buy gas because they saw a large BP logo. That choice was made when you bought the car.

It’s little different than a hospital sign. People don’t think hey there’s a hospital maybe I should have this gaping chest wound taken care of. Which is why they end up as H’s with a simple arrow rather than list out which specific hospital etc.