No, at the moment it is not profitable to leave the equipment connected, however, shutting it down, uninstalling, removing all the cables and losing a space inside the data center can be much more expensive.
Umm, you would just redirect the coin payments to a different address. This garbage post, catered to the ignorant, tells me you cannot be trusted.
Example: You send me 1btc, I promise to give you access to my car. I would take too much of a loss to sell it, so that guarantees you can keep driving it.
Reality: I simply take away the keys.
Only a few of your domains are worth a few dollars more than registration...