Second, by bringing up free computer access at a library, it connects the point you're trying to make with the really complicated nuances around poverty. Even assuming we ignore smartphones and tablets (because how can you get any work done on one?), the demographic that only has access to a device with a keyboard at a public library is going to be almost entirely facing (at least) moderate poverty, and life in poverty just looks very different from the kinds of backgrounds that the rest of your piece implicitly addresses. So, you could focus instead on the wealth of free software tools available to the people who are in some range of circumstances to take advantage of them, assuming that access to a device with a keyboard isn't the primary challenge.