[sprash]

Staking can be pooled just like regular POW mining pools. However unlike POW mining pools you have to give the majority of your funds to a trusted party whereas with POW mining the maximum you can loose is the unpaid balance between payouts which is usually some days worth of mining.

[SwagtimusPrime]

there will be decentralized & trustless staking pools such as RocketPool, where even if a loss of funds occurs the loss is subsidized through the entire protocol.