In fact, company stock is WAY worse, because the majority of people are legally prohibited from investing in private companies unless they're an accredited investor (already rich). So, only rich people (other than founders and early employees) are allowed to buy in at super low prices before handing off the bag to the public.
Cryptocurrency removes the underlying asset and simply sells shares of artificial scarcity. It’s only as valuable as what people decide to trade it at, because it doesn’t represent ownership of anything other than itself.
Depending on the voting rights embedded in the share, your ownership is likely meaningless. It doesn't guarantee you rights to dividends necessarily and even if it does, the company can just choose to never issue a dividend (like Amazon). It doesn't necessarily grant you voting rights for the Board of Directors either. Worse, you have to go through a 3rd party broker to buy a share or trust a company like Robinhood to hold your shares for you. As we saw with GameStop, they can rug pull on you at any time. With decentralized cryptos like BTC & ETH, that can't happen from your own private wallet. You can always transact.
Cryptos such as BTC & ETH are provably scarce, not artificially scarce. You can validate supply at any time by running your own node and joining the network. You don't need anyone's permission to do that. It's a public blockchain.
ETH is probably not the best example here because they have rug-pulled people with a hard fork.
"People" here being criminals that exploited a flaw in the DAO, yeah?
The code is the contract, enforced by a decentralized network of actors. Of course that network can at any point change the contract if the majority of them agree to do so – how else would it work? The key is that there is no way for individual actors to modify contracts at will – you need consensus. It's the difference between oligarchy and democracy.