There seems to be a lot accounts setup at blockchain.com and blockchain.info with the passwords lost.

What happens with the bitcoin after a few years, does their support siphon the coins?

I mean they have the wallet IDs and wallet backups in JSON format together with email addresses, but if a person loses the mail associated with the wallet then BOOM, your coins are gone. A friend of mine has been trying to recover a long lost password since 2013, a big chunk of coins, but since his mail provider went out of business he has no way to request a backup wallet.

Anyone in similar position?