There are many crypto projects that are not transparent. They have a feature to sign in the Genesis wallet. They can create as many tokens as they want. This will happen to unlimited tokens. It can also happen with limited tokens.

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Investors are offered discounted prices at the pre-sale and ICO. After that, the developers list their tokens on the market. The projects have not been completed, but the tokens are already on the market.
The developers will usually buy back the tokens. Their action will slowly pump up the price. Then, there are some traders who buy more tokens, which causes the price to rise above the ICO price.

After the price soars in the market, no one cares about the movement of the tokens from wallets to other wallets. Here, accountable developers will keep the price high and protect the token supply from hyperinflation.
Unfortunately, the scammer will sell a huge number of tokens from mysterious wallets. The mysterious wallets are owned by the developers or their partners. Finally, the mysterious wallets will get a lot of cash and vanish. The market is suffering from hyperinflation. The token price has been dumped. Wallet holders will panic. They sell the token at a low price. And.... the token is gone from the market due to the low volume.

Transparent Developers

A crypto project should be transparent because the wallets are traceable. It is not fair to buy tokens with cash, but the price is dumped in the market. Without transparency, crypto projects are just a kind of money game, pyramid system, or ponzi scheme.