If a company or a country were to acquire all 10 million circulating #Bitcoins, the impact would depend on the market's reaction:

1. Price Impact: The price would initially skyrocket due to high demand, possibly reaching #$1M per #Bitcoin. However, over time, trust in #Bitcoin could decline, leading to a price crash as decentralization—the core principle of #Bitcoin—would be compromised.

2. Loss of Decentralization: Bitcoin's value lies in its decentralized nature. If one entity controls most of it, the market may shift to alternative cryptocurrencies.

3. Dark Web Usage: Bitcoin has already lost favor in the dark web to more private coins like Monero. Centralized control would further reduce its appeal for such purposes.

4. Practicality: Acquiring all Bitcoin is unrealistic, as much of it is either lost or held by long-term holders. Mining also continues to produce new coins.

Conclusion: Centralized control over Bitcoin would undermine its purpose, causing users and investors to seek alternatives, potentially leading to its decline.