Not necessarily. The bus will still operate, if you ride on it or not. The cost is the same.
If say 20% of passengers don’t pay and you have to get more buses and drivers because of that. Then it’ll affect prices.

Just as pirating Netflix movies without ever having the intention of paying for them is the same outcome as not watching them.
Maybe worse for Netflix since you won’t tell your friends about it. There are studies that prove this effect.