One form of that service is good product design. Another is a great manual. The online help that supposedly replaces it inevitably runs out of information just as you close in on what you need to know. Their miserly policies push expenses out to the users. Try to get details on the particular CD-RW or DVD drive the computer maker stuck into your machine.
Several things are wrong with manuals meant to be read on computer screens.
Since my computer screen doesn't face my printer or scanner, it's not exactly easy to read online documentation while I'm fiddling with peripherals' front panels. Maybe you're supposed to bring along a laptop whenever you use the phone. Unless you have experience with networks, you have little chance of getting the settings right from the meager info the ISPs and Microsoft supply. Yet not one of the gateways I've tried offers any real help in these two essential areas. Professional indexing by a human being has become a quaint concept.