It is nowhere near the only scarce & decentralized coin. All of the others mentioned are, to varying degrees, not only decentralizef, but also scarce.

Bitcoin Cash is quite literally also invented by Satoshi as well and thus shares the decentralization & 21 M cap. Litecoin has an 84M cap, Dogecoin & Monero are a little different, but they are scarce in a similar way that precious metals are scarce.