I suppose it depends if there's someone manipulating it. A coin like Bitcoin is immune to internal manipulation -- there's one Bitcoin mined every ten minutes, and no one can change that, no matter how much money they have.
Satoshi proved that a blockchain is only secure if it's the blockchain with the longest accumulated proof-of-work record. Dogecoin's blockchain is shorter, and they can't win a race where the other players are already ahead. Miners will generally only mine the blockchain with the most value, thus the market for one mining the leading crypto squeezes out the market for mining all the others. Miners must vote with their electricity as to which blockchain to support. No other blockchain can ever maintain its stability as long as Bitcoin exists.
The game theory that backs Bitcoin also proves that all other cryptocurrencies cannot work in the long term.
Satoshi proved that a blockchain is only secure if it's the blockchain with the longest accumulated proof-of-work record. Dogecoin's blockchain is shorter, and they can't win a race where the other players are already ahead. Miners will generally only mine the blockchain with the most value, thus the market for one mining the leading crypto squeezes out the market for mining all the others. Miners must vote with their electricity as to which blockchain to support. No other blockchain can ever maintain its stability as long as Bitcoin exists.
The game theory that backs Bitcoin also proves that all other cryptocurrencies cannot work in the long term.