You removed all of their logging and all of their redundancy and reliability and replaced it with shitters that will all explode if the small providers one data centre goes down.
And if someone penetrates this mega server, they’ll be able to wipe all your logs or tamper with them, to hide the attack.
If your storage servers go down, everything they have is gone. And these providers don’t offer the finest hardware. How do you know all of those drives aren’t from the same batch? They will be, because they’re a bulk buyer with a single data centre.