Google Search? I don't recall the last time I had to send Google an email because their search wasn't working for me. Over the top example, but an example nonetheless.
That doesn't mean people are willing to pay for faster support or even need it. Feedly offers a pro account but obviously decided against crippling the free account. I'm very happy about that. If people are willing to pay they get priority support as an additional value. And as bonus: if the support queue is short once it is implemented in the support software/workflow this feature costs feedly nothing.