What is the greatest risk for bitcoin and altcoins?

[nelson4lov]

I'm not so sure Satoshi will ever sell his bitcoin holdings, I mean it's been over 10years now and the 1 million bitcoin has not been moved to any wallet, but if eventually he decides to sell his holdings it will definitely crash the bitcoin price cause his holding over ~5% of the total supply of bitcoin, it will be disastrous if he ever dumps on the market.

[MrSpasybo]

There are several threats to the crypto community, including Bitcoin & Altcoins:
+ Regulations of countries: if countries prohibit crypto mining in any form, prohibit the use or trading of cryptocurrencies, prohibit crypto exchanges from operating in that country, crypto will be heavily affected;
+ Sell-off: if Satoshi, Ripple or DOGE whales do this, the crypto market will be in turmoil;
+ POW miners revolt: this threat existed during the event that Ethereum miners wanted to oppose EIP-1559;
+ The attacks of hackers on crypto exchanges or lending platforms…;
+ Quantum computing: crypto isn't ready for this yet. Currently, as far as I know, only IOTA's Tangle technology has an effective solution against the attack of the quantum computer.

[ashraf786100]

There it can be reduced on a regular basis and every company involved in corruption will cooperate with the government in doing so. Also, the government can get a lot of tax from cryptocurrency, which will help the owner to grow.