Ordinary Britons may not be in the 95th to 99th percentile wealth class, but they're in the 90th to 99th percentile. But I don't think that what you're talking about is a question of technology, much less of the internet — it's a matter of deregulation and political alignment, something that is coming to an end with Brexit. Aviation technology advanced in leaps and bounds from the 1890s to the 1960s and has only improved incrementally since 1970. (And of course we no longer have Concorde at any price.)
If we're talking outside the western world, things have changed far more dramatically. Across the developing world, hundreds of millions of people have risen out of abject poverty. My wife grew up in China, in a house her father built from a pile of bricks provided by his employer. She helped make their floor tiles, and this was in an industrial city. China's a different world now, and while they are the poster child, this trend isn't isolated to them. The chart linked below is astounding.
