In fact, it is actually quite often that people don't want to pay that, even if they can: many of my friends do not actually use customer service on their computers and they know enough not to call our ISP about stupid issues that have nothing to do with them. They therefore tend to optimize their purchases of these kinds of products based on other factors, like price, and if someone says "Verizon has terrible customer support" they don't care if it saves them money they can spend on other things.
What you are seriously saying is that the price of gum at the gas station should be higher so that the gas station attendant can have the time to hear every single complaint you might have about it: I'm sorry, but most people just want a cheap pack of gum. It is entirely market-dependent whether people are willing to shell out more money for better support. Would it be cool if everyone everywhere had great support? Maybe, but it certainly wouldn't be efficient, and people would have to buy a lot less.
As a sad logical conclusion of this, my business model simply doesn't work if you have to provide world-class support. You cay say it is part of "sales", but honestly, in the end, you paid $1 for something: maybe all you need right now is a refund. People think it could work as a business, though, because they see Apple doing just that, but Apple makes their money on hardware with multi-hundred dollar margins, and then breaks even selling apps for those devices only because it is an interesting way for them to sell more hardware.
Yet, people want businesses like mine to exist. People go to thrift stores, they buy stuff at $1 stores, they purposely get Dell laptops (and wait until they are on sale with a special offer code), and PriceLine.com finally slumped, but it did so slower than the highly price-competitive airline industry that people complain about bitterly. Some people just don't feel that support is something they are willing to pay for: it is a form of insurance against the future that doesn't harm anyone else if you choose not to buy it, and so often you just don't and live with the consequences.