I really like the axis Sloterdijk provides for thinking of globalization throughout history as both a returning to earlier forms and a slowly building compression of space. For example, he makes connections between medieval conceptions of locality, i.e. bilocality, the ability to inhabit two places at once, and digital experiences of translocality, in which distance collapses and no longer provides an obstacle. Between them is terrestrial globalism, in which the obstacle of distance is fetishized and the goal becomes discovery. At the same time, he describes the ways in which space becomes slowly more compressed: from the ancients, whose morphological conception of the globe recognized no limits; to the ages of empire, whose expanded globe was compromised by the possibility of mapping the entire thing; to finally the electronic globe, in which you're stuck where you are no matter where you go because the reach of capital has shot through and homogenized the globe. So one of the major lessons I learned was the distinction between place and space: two pieces of jargon I often conflate.
And that ultimately seems to be Sloterdijk's investment, right? To take inventory of terms, so that we can root our political and economic analyses in philosophy once again. If we all subscribe to the same grand narrative, then our words can actually mean again, rather than shifting around sensational news about the state of things. It makes it possible to describe the state of things as either worse or better, and for it to actually mean something. He ends with an urgent call of asymmetry, the "immune system" the local can cultivate against the reach of global capital, but in a sense I think this is equally a call to disagree with him on philosophical terms, so that productive conversations can be had. Let's hash out, once and for all, which definitions of "right" and "left" the history of the world leaves us with, and argue for or against the political implications of certain practices: whether they be cultural nationalism, opening far-reaching corporate branches, or even just having a nicely curated apartment.