Coinbase offers "Cosmos" with a yearly annual return of 17.66%.
I did some research on Cosmos and its future looks bright.
On my research, it says to only Stake on huge platforms, such as Coinbase.
As far as I can tell, the annual return stays at 17.66% for the duration.
Is there any drawback I'm missing?
Why don't people just buy Cryptos that they can stake?
The last two investments i made into cryptos was Cosmos and NEAR. Both are coins that have native staking because like you i really like the idea of getting some nice extra rewards by just staking those coins because i plan to hold them for a long time anyway. One drawback is that for example Cosmos has an unlimited supply, which is obviously not a good thing for the price development of an asset but that is where those staking rewards are coming from. So if you are holding Cosmos then you should definitely stake them because otherwise you are diluting the value of your assets because the total supply is rising and therefore your share of the total supply automatically goes down.
Also you can stake Cosmos not only on Coinbase. You can also stake it on wallets like Atomic Wallet. There you are in control of the private key. When you stake on Coinbase then you are not in control of the private key. Don't forget that.