The importance is that the VC funding allows the service to offer its service free of charge to users until it can scale enough to either land a cushy acquisition based on connections the VC firm has or (much more rarely) monetize via a method that isn't viable until they've already scaled up.
In either case, you are not the customer, since you are not paying them. In the absence of VC funding, however, companies are much more likely to be forced to charge their users, meaning they have a more vested interest in customer service.
In either case, you are not the customer, since you are not paying them. In the absence of VC funding, however, companies are much more likely to be forced to charge their users, meaning they have a more vested interest in customer service.