There's more overall for everyone, but the people at the bottom are getting a smaller and smaller share, and a lot of important things, like housing, not to mention with things like streaming, and online stores, we don't really "own" most of the media we consume anymore, we just pay forever to rent it. Fast fashion and planned obscelescence means that our clothing is worse than what people used to have, and our machines don't last as long, so we have to keep replacing both of those.
What we do have is designed not to last, and more meaningful, life-long purchases are out of reach. Meanwhile the people at the top of the pile who do literally nothing but "have wealth" sit around on their yachts blissfully ignoring the people starving to death on the streets.
Not to mention that people in America and Europe aren't necessarily at "the bottom". A lot of today's wealth is built on the backs of poorer countries that make even less than we do, or nothing at all, or by exploiting them by coming in and privatizing something as basic as water.