In countries like America yes those 90s computers were widely available.
But now practically everyone no matter the country has a phone now. The availability is much higher. There are more ways to learn, videos from harvard and fun games are the new introductions instead of manuals.
Sure, for a few countries (perhaps Brazil, India, China). That is not really related to technological progress but to economical development in those countries, though.
Everyone else either had that access (Europe, Australia, Japan, even Russia) or is still too poor to have time or is lacking the necessary fundamental education to be able to focus on it even now (for example, much of Africa, unfortunately).
But now practically everyone no matter the country has a phone now. The availability is much higher. There are more ways to learn, videos from harvard and fun games are the new introductions instead of manuals.