You can't "move" your address anywhere.

If you have your seed phrase from blockchain.com, you can import your private keys and therefore your addresses to another wallet. This does not "move" them, however. Although you would have access to your coins via your new wallet, you would also still have access to them via blockchain.com. If you goal is to ensure blockchain.com no longer have the potential to access your coins, then the only option is to send all your coins in a normal transaction to an address you control elsewhere.

Just playing devil's advocate here, but how do we know it hasn't already happened? There are endless stories of people having their blockchain.com accounts hacked and losing their coins. How do we know this wasn't blockchain.com stealing coins from their users? As with all web wallets, you are relying on trusting a third party.