Decentralized governments: already a reality in most places, with a clear hierarchy (federal, state/province, city). Local communities aren’t always formed, but can coexist
Decentralized power sources: kinda there already? The thing is that it makes more sense economically to have a small number of big power plants than spread then thinly, especially due to industry needs that can be much larger than what residential lines typically transmit
Decentralized market: I mean, open fairs and small, corner markets are still a thing, no? Or what kind of market do you mean?
Decentralized currency: crypto kinda does that? There’s no central authority issuing whatever-coins. In more real-life terms, decentralized currency is deeply tied to local economy and you can look at history for how something like that used to work: small kingdoms almost always wanted to mint their own coins, then whenever conducting trade with external markets, some exchange rates would be set based on supply/demand.
Their refund tends to work well, even if the seller tries to convince you to send the piece of shit back to them. Just say “seller will use the item to fraud another customer” when refusing to send it back (if it was an obvious fake thing, like “8tb pendrive”). Ali will almost always side with you